13 Best Soft Shell Roof Cargo Boxes, Compared
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Finding the best soft shell roof cargo boxes requires comparing strict specifications rather than subjective opinions. We analyzed 13 models based solely on the data published on their listings. The Sailnovo 21 cu ft Soft Roof Bag leads this list because its 8.16-pound weight makes it the lightest option available. This low mass benefits drivers who need occasional extra space without permanent installation. Soft shell carriers offer flexible storage for vehicles with or without roof racks. Use this guide to decide which capacity and mounting style fits your vehicle.
Quick picks
The best fit for you
- You need the most compact soft shell carrier Sailnovo 21 cu ft Soft Roof Bag It weighs 8.16 pounds and measures 9.84 inches long.
- You require maximum cargo volume for large loads Mockins 40 CuFt XXL Roof Bag It offers 40 cubic feet of capacity with a 72-inch length.
- You want secure storage with a built-in lock Mockins 30 cu ft Soft-Shell Vinyl Roof Bag It includes a combination lock for 30 cubic feet of waterproof space.
- You need a lightweight option for small trips Sailnovo 15 cu ft Soft Shell Roof Bag It weighs only 5.95 pounds while providing 15 cubic feet of space.
Our 13 picks
Sailnovo 21 cu ft Soft Roof Bag
Best for: lightweight waterproof roof bag for occasional trips
- Shell Type
- Soft Shell (what this guide is about)
- Capacity
- 21 cubic feet
- Water Resistance
- Waterproof
- Installation
- Tie-Down Strap
- Dimensions
- 9.84 x 7.09 x 13.8 in
- Vehicle Type
- Car
The Sailnovo 21 cu ft Soft Shell Roof Bag is a waterproof, tie-down-strap-mounted cargo carrier for cars. It offers 21 cubic feet of capacity and weighs 8.16 pounds. This bag suits drivers who need a lightweight, soft-shell option for occasional trips without a permanent roof box.
Pros
- 21 cubic feet of capacity for bulky gear
- Waterproof construction protects contents from rain
- Lightweight at 8.16 pounds for easy handling
- Available in two size options (21 and 15 cubic feet)
Cons
- No hard shell for impact protection
- Tie-down straps may require more effort to secure than clamp-on systems
- Dimensions listed as 9.84 x 7.09 x 13.8 inches, which may be a packaging or listing error
Good fit if
- You want a budget-friendly soft shell roof bag for occasional use
- You need a waterproof carrier that can be stored when not in use
Skip if
- You prefer a hard-shell roof box for security and aerodynamics
- You need a carrier with a larger capacity than 21 cubic feet
Verdict: Sailnovo 21 cu ft Soft Shell Roof Bag is a practical, lightweight waterproof roof bag for car owners who need occasional extra cargo space without a permanent installation.
Mockins 40 cu ft XXL Soft-Shell Roof Bag
Best for: maximum cargo volume and waterproofing on any vehicle
- Shell Type
- Soft Shell (what this guide is about)
- Capacity
- 40 cu ft
- Water Resistance
- Waterproof
- Dimensions
- 72 x 48 x 20 in
- Recommended Use
- Suitcases, sleeping bags
- Vehicle Type
- Car
This Mockins 40 CuFt XXL soft-shell roof bag gives you 40 cubic feet of cargo space with dimensions of 72x48x20 inches. It is designed to fit vehicles with or without crossbars, side rails, or roof racks. The bag is made from abrasion-resistant vinyl with waterproof zippers under a protective flap. It suits anyone who needs a large, waterproof carrier for bulky gear like suitcases, sleeping bags, or tents.
Pros
- 40 cu ft capacity is among the largest in this guide
- Waterproof construction with vinyl material and protected zippers
- Includes a complete kit: straps, hooks, mat, lock, and carry bag
- Fits vehicles with or without crossbars or roof racks
- Backed by a 10-year limited warranty
Cons
- Weighs 15.7 pounds, heavier than many smaller soft-shell bags
- No built-in lights or reflective elements listed for nighttime visibility
- Assembly required to attach multiple strap and hook components
Good fit if
- You need maximum cargo space for long trips or moving bulky items
- You want a waterproof soft-shell bag that works on vehicles without roof racks
- You prefer a complete kit with all mounting accessories included
Skip if
- You want a lightweight bag for occasional, short trips
- You need a hard-shell box for aerodynamic efficiency or locking security
- You have limited roof space and do not need 40 cubic feet of capacity
Verdict: Mockins 40 CuFt XXL Soft-Shell Roof Bag is a top choice for sheer capacity and waterproof protection, offering a complete installation kit and vehicle compatibility that sets it apart from smaller soft-shell options.
Mockins 40 cu ft XXL Roof Bag
Best for: large-capacity soft-shell cargo hauling
- Shell Type
- Soft Shell (what this guide is about)
- Capacity
- 40 cu ft
- Water Resistance
- waterproof
- Dimensions
- 72 x 48 x 20 in
- Vehicle Type
- Car
- Weight
- 16.5 pounds
This Mockins XXL soft-shell roof bag offers 40 cubic feet of storage space, measuring 72 by 48 by 20 inches. It is made from abrasion-resistant 840D vinyl with waterproof zippers and reinforced seams. The kit includes straps, hooks, a roof mat, a combo lock, and a carry bag. It fits vehicles with or without crossbars and side rails.
Pros
- 40 cu ft capacity (72 x 48 x 20 in) for bulky gear
- 840D vinyl shell with waterproof zippers and reinforced seams
- Includes 3 buckle straps, 3 ratchet straps, 6 door hooks, 2 trunk hooks, roof mat, combo lock, and carry bag
- Fits vehicles with or without crossbars or side rails
Cons
- No rainfly or additional weather cover listed
- Soft-shell design offers less security and aerodynamics than a hard shell
- Requires assembly of multiple straps and hooks for installation
Good fit if
- You need maximum soft-shell cargo space at 40 cu ft for long trips or moving
- You want a complete kit with straps, hooks, and a roof mat included
Skip if
- You prefer a hard-shell box for better security and aerodynamics
- You want a smaller, lighter bag for occasional short trips
Verdict: Mockins 40 CuFt XXL Soft-Shell Roof Bag is a premium soft-shell cargo carrier with a large 40 cu ft capacity and a full accessory kit, ideal for hauling bulky loads on vehicles with or without roof racks.
Mockins 30 Cu Ft Navy Blue Soft Shell Roof Bag
Best for: vehicles without roof racks needing waterproof storage
- Shell Type
- Soft Shell (what this guide is about)
- Capacity
- 30 cubic ft
- Dimensions
- 60"x43"x20"
- Mount Type
- Roof Mount
- Weight
- 12.4 pounds
View on Amazon: Mockins 30 Cu Ft Navy Blue Soft Shell Roof Bag
The Mockins 30 Cu Ft Navy Blue Soft Shell Roof Bag is a 30-cubic-foot cargo carrier that measures 60x43x20 inches. It is built from abrasion-resistant 840D vinyl with welded seams and a waterproof zipper. This bag works with or without roof racks, using a door hook system and heavy-duty straps for vehicles without crossbars. It suits travelers who need a waterproof, no-rack option for SUVs, vans, or sedans.
Pros
- 30 cubic ft capacity fits 6-8 large suitcases or bulky loads
- 840D vinyl construction with welded seams and waterproof zipper for weather protection
- Includes door hook system and straps for vehicles without roof racks or side rails
- Anti-slip mat helps protect vehicle paint from scratches
- 10-year limited warranty included
Cons
- No integrated lights or reflective elements for visibility at night
- Assembly requires attaching multiple straps and door hooks each time
- Soft shell design offers less security against theft than a hard shell box
Good fit if
- You need a waterproof cargo carrier that works on vehicles without roof racks
- You want a 30-cubic-foot capacity for carrying bulky gear like tents or sleeping bags
- You prefer a low-profile design that minimizes wind drag
Skip if
- You need a hard shell box for maximum security or aerodynamics
- You want a carrier with built-in lighting or reflective strips
- You require a larger capacity than 30 cubic feet
Verdict: Mockins 30 Cu Ft Navy Blue Soft Shell Roof Bag is a practical, waterproof soft shell carrier for vehicles with or without roof racks. Its 30-cubic-foot capacity and included anti-slip mat make it a solid choice for road trips and camping.
Mockins 30 cu ft Soft-Shell Vinyl Roof Bag
Best for: secure, waterproof soft-shell cargo with a lock
- Shell Type
- Soft Shell (what this guide is about)
- Capacity
- 30 cu ft
- Water Resistance
- waterproof
- Security
- combination lock
- Vehicle Compatibility
- vehicles with or without roof rack
- Dimensions
- 60 x 43 x 20 in
This Mockins soft-shell roof bag offers 30 cubic feet of cargo space, with dimensions of 60 x 43 x 20 inches. It is made from waterproof vinyl with welded seams and a protected zipper. The bag includes a combination lock for security and comes with straps, door hooks, and a roof mat. It fits vehicles with or without a roof rack.
Pros
- 30 cu ft capacity with dimensions 60 x 43 x 20 in
- Waterproof vinyl construction with welded seams
- Includes combination lock for added security
- Comes with straps, door hooks, and protective roof mat
- Folds into its own carry case for storage
Cons
- Vinyl material may be less breathable than fabric options
- No integrated lights or reflective elements listed
Good fit if
- You want a waterproof soft-shell bag with a built-in lock
- You need a 30 cu ft bag that works with or without a roof rack
- You prefer vinyl construction for durability against abrasion
Skip if
- You need a larger capacity than 30 cu ft
- You want a bag with reflective strips for visibility
Verdict: Mockins 30 cu ft Soft-Shell Vinyl Roof Bag offers a solid 30 cu ft of waterproof storage with a combination lock and all necessary mounting accessories, making it a practical choice for secure, all-weather travel.
Rooftop Ranger 21 cu ft Soft Shell Cargo Carrier
Best for: budget-minded drivers needing a basic waterproof roof bag
- Shell Type
- Soft Shell (what this guide is about)
- Capacity
- 21 cu ft
- Water Resistance
- 100% waterproof
- Security
- Security lock
- Installation
- Door hooks and straps
- Vehicle Compatibility
- With or without roof racks
View on Amazon: Rooftop Ranger 21 cu ft Soft Shell Cargo Carrier
The Rooftop Ranger 21 cu ft Soft Shell Cargo Carrier is a budget-friendly soft shell roof bag with 21 cubic feet of storage space. It measures 54 x 42 x 17 inches and weighs 8.5 pounds. This carrier is 100% waterproof and works with or without roof racks using door hooks and straps. It suits drivers who want a simple, low-cost cargo solution for occasional trips.
Pros
- 100% waterproof construction protects belongings in all weather
- Works with or without roof racks using door hooks and straps
- Includes security lock for added peace of mind
- Non-slip mat prevents movement and protects vehicle roof
- Lightweight at 8.5 pounds for easy handling
Cons
- 21 cu ft capacity is smaller than many other soft shell options on this list
- No integrated lights or reflective elements listed for visibility
- Requires manual assembly of straps and hooks each use
Good fit if
- You want a basic, affordable soft shell cargo carrier for occasional use
- You need a carrier that fits vehicles without roof racks
- You prefer a lightweight bag that is easy to store when not in use
Skip if
- You need maximum cargo capacity for large loads
- You want a carrier with built-in lights or reflective features
- You prefer a hard shell box for rigid protection
Verdict: Rooftop Ranger 21 cu ft Soft Shell Cargo Carrier is a solid entry-level soft shell bag for budget-conscious shoppers who need basic weather protection and universal fit, but its smaller capacity limits it compared to larger options on this list.
MCBD 40 cu ft Soft-Shell Roof Bag
Best for: drivers with large roofs who need 40 cu ft of waterproof cargo space
- Shell Type
- Soft Shell (what this guide is about)
- Capacity
- 40 cu ft
- Water Resistance
- 100% waterproof
- Security
- combination lock
- Dimensions
- 72 x 48 x 20 in
- Vehicle Type
- Car, SUV
This MCBD soft-shell roof bag gives you 40 cubic feet of cargo space in a 72 by 48 by 20 inch footprint. It uses 900D PVC tarpaulin rated as 100% waterproof and includes two ratchet straps, an anti-slip mat, six door hooks, a combination lock, and a storage bag. It suits large cars, SUVs, and vehicles with or without roof racks, as long as your roof measures 68 to 80 inches long and 45 to 52 inches wide.
Pros
- 40 cu ft capacity in a 72 x 48 x 20 in soft-shell design
- 100% waterproof 900D PVC tarpaulin shell
- Includes 2 ratchet straps, anti-slip mat, 6 door hooks, combination lock, and storage bag
- Fits vehicles with side rails, cross bars, no-rack roofs, or baskets
- Folds down when not in use
Cons
- Requires a roof length of 68 to 80 inches and width of 45 to 52 inches, so smaller roofs may not fit
- No listed integrated stiffener or rigid base, so load shape may depend on how you pack it
Good fit if
- You need one of the larger soft-shell capacities on this list at 40 cu ft
- You want a full accessory kit with straps, mat, hooks, and lock included
- You have an SUV or large car with a roof that matches the stated 68-80 in length and 45-52 in width
Skip if
- Your roof is shorter than 68 inches or narrower than 45 inches
- You prefer a hardshell box with a rigid molded shape
- You want a lighter bag, since this one weighs 16.3 pounds
Verdict: MCBD 40 cu ft Soft-Shell Roof Bag is a high-capacity, fully waterproof option for large vehicles, with a complete strap-and-lock kit included.
Mockins 40 CuFt XXL Roof Bag
Best for: maximum cargo volume on vans and rackless vehicles
- Shell Type
- Soft Shell (what this guide is about)
- Capacity
- 40 Cubic Feet
- Water Resistance
- Waterproof
- Security
- Combo lock
- Vehicle Compatibility
- Most vehicles, with or without roof rack
- Dimensions
- 72 x 48 x 20 in
This is a 40-cubic-foot soft-shell roof cargo carrier made from waterproof vinyl. It measures 72 by 48 by 20 inches and weighs 15.8 pounds. The bag works on most vehicles, with or without a roof rack, and includes a combo lock for security. It suits drivers who need maximum cargo volume for road trips, camping, or moving.
Pros
- 40 cubic feet capacity is among the largest in this guide
- Waterproof vinyl shell with waterproof zippers and reinforced seams
- Works on cars, SUVs, trucks, and vans with or without a roof rack
- Includes a combo lock for added security
- Comes with multiple mounting options: buckle straps, ratchet straps, door hooks, and trunk hooks
Cons
- Vinyl shell is heavier than fabric alternatives at 15.8 pounds
- No integrated lights or reflective elements listed
- Requires assembly of straps and hooks before each use
Good fit if
- You need the maximum cargo space available in a soft-shell roof bag
- You drive a van or large SUV and want a carrier that fits without a roof rack
- You want a waterproof carrier with a lock for securing your gear
Skip if
- You prefer a lighter, fabric-based soft shell for easier handling
- You need a carrier that mounts permanently or has a hard shell for aerodynamics
- You want a carrier with built-in lights or reflective strips for nighttime visibility
Verdict: Mockins 40 CuFt XXL Roof Bag offers the largest cargo capacity in this guide at 40 cubic feet, with a waterproof vinyl build and versatile mounting that works on vans and vehicles without a roof rack. It is a practical choice for drivers who prioritize volume and weather protection over weight or aerodynamics.
Mockins 35 cu ft Black Roof Bag
Best for: large waterproof soft-shell cargo with included accessories
- Shell Type
- Soft Shell (what this guide is about)
- Capacity
- 35 cu ft
- Water Resistance
- Waterproof
- Dimensions
- 60 x 42 x 24 in
- Vehicle Type
- Car
- Mount Type
- Roof Mount
The Mockins 35 cu ft Black Roof Bag is a soft-shell vinyl cargo carrier that measures 60 x 42 x 24 inches and holds 35 cubic feet of gear. It is waterproof with a sealed zipper and welded seams, and it includes a full set of straps, hooks, and a roof mat. This bag suits drivers who need a large, weatherproof cargo bag for vehicles with or without crossbars.
Pros
- 35 cu ft capacity fits oversized loads like tents and sleeping bags
- Waterproof construction with sealed zipper and welded seams
- Includes 9 straps, 8 hooks, a bag lock, and a roof mat
- Compatible with vehicles that have or lack crossbars
- Backed by a 10-year limited warranty
Cons
- Vinyl shell may be less durable than heavier fabric options
- No integrated lighting or reflective elements listed
- Requires manual assembly of multiple strap sections
Good fit if
- You need a large 35 cu ft soft-shell carrier for road trips or camping
- You want a waterproof bag with a full accessory kit included
- Your vehicle does not have roof crossbars and you need a no-rack solution
Skip if
- You prefer a hard-shell box for aerodynamic efficiency
- You need a smaller, lighter bag for occasional short trips
- You want a carrier with built-in locks or reflective strips
Verdict: Mockins 35 cu ft Black Roof Bag is a practical choice for drivers who need a large, waterproof soft-shell carrier with a complete mounting kit and a 10-year warranty.
Sailnovo 15 cu ft Waterproof Roof Bag
Best for: compact waterproof storage on cars without roof racks
- Shell Type
- Soft Shell (what this guide is about)
- Capacity
- 15 cubic feet/430 L
- Water Resistance
- Waterproof
- Dimensions
- 14.2 x 9.45 x 7.48 in
- Vehicle Type
- Car
- Mount Type
- Roof Mount
This Sailnovo roof bag offers 15 cubic feet of storage capacity, enough for 3-5 medium suitcases. It is made from 1000D material with waterproof zippers and double seams. The bag includes six tie-down straps and four door hook straps for secure mounting. It fits cars with or without roof racks and folds flat for storage.
Pros
- 1000D material with waterproof double coating and sealed zippers
- Includes 6 heavy-duty tie-down straps plus 4 door hook straps
- Velcro strap restraints reduce flapping noise at highway speeds
- Folds flat for compact storage when not in use
Cons
- 15 cu ft capacity is smaller than many other soft shells on this list
- Dimensions listed as 14.2 x 9.45 x 7.48 in appear inconsistent with 15 cu ft volume
Good fit if
- You want a waterproof soft shell with multiple strap attachment points
- You need a bag that fits cars without roof racks or crossbars
- You prefer a smaller, lighter cargo bag for occasional trips
Skip if
- You need maximum cargo capacity above 20 cubic feet
- You want a bag with a rigid shell or hard-sided protection
Verdict: Sailnovo 15 cu ft Waterproof Roof Bag is a compact, waterproof soft shell with secure mounting straps and noise-reducing design, suited for smaller loads and vehicles without roof racks.
Sailnovo 15 cu ft Soft Shell Roof Bag
Best for: small loads on cars without roof racks
- Shell Type
- Soft Shell (what this guide is about)
- Capacity
- 15 cubic feet / 430 L
- Vehicle Compatibility
- Fits most cars with or without roof rack
- Dimensions
- 9.84 x 6.89 x 13.4 in
- Weight
- 5.95 pounds
The Sailnovo 15 cu ft Soft Shell Roof Bag is a compact soft-shell cargo carrier with 15 cubic feet (430 L) of capacity. It measures 9.84 x 6.89 x 13.4 inches and weighs 5.95 pounds. This bag fits most cars with or without a roof rack, using door hooks and straps for installation. It is designed for light loads and short trips where you need extra storage without a permanent rack.
Pros
- 15 cubic feet (430 L) capacity holds 4-6 small suitcases or camping gear
- Includes 4 door hooks and 6 adjustable straps for secure fit on cars without roof racks
- Waterproof zipper and double-reinforced seams for weather resistance
- Lightweight at 5.95 pounds and folds into a storage bag for portability
Cons
- Smaller capacity than most soft-shell carriers on this list (15 cu ft vs. 20-40 cu ft)
- No anti-slip mat included despite feature description (anti-slip mat is listed as included)
- Dimensions suggest a compact shape that may not fit bulky items like large suitcases
Good fit if
- You have a car without roof rails and want a carrier that uses door hooks for installation
- You need a lightweight, portable cargo bag for occasional trips with small loads
- You prefer a compact carrier that stores easily in a small storage bag
Skip if
- You need to carry large or bulky items like multiple suitcases or oversized gear
- You want a carrier with a capacity of 20 cubic feet or more
- You plan to use the carrier on a vehicle with a roof rack that requires a different mounting system
Verdict: Sailnovo 15 cu ft Soft Shell Roof Bag is a compact and lightweight soft-shell carrier best for small loads and cars without roof racks, but its limited capacity may not suit larger families or heavy gear.
SportRack Cargo Box + Go Packs
Best for: basic soft shell cargo carrying
- Shell Type
- Soft Shell (what this guide is about)
The SportRack Cargo Box + Go Packs is a soft shell roof cargo carrier in black. It uses a polypropylene (PP) material and a zipper closure for security. This model is a straightforward, no-frills option if you want a basic soft shell carrier for occasional trips without extra features like integrated lights or a hard shell.
Pros
- Polypropylene (PP) construction for durability
- Zipper closure keeps contents secure
- Black color matches most vehicles
- Soft shell design for easy storage when not in use
Cons
- No integrated lighting or reflectors listed
- Soft shell offers less protection from impacts than a hard shell
Good fit if
- You want a simple, no-frills soft shell cargo carrier
- You need a carrier that can be folded and stored easily
- You prefer a zipper closure over a buckle or strap system
Skip if
- You need a hard shell for maximum security and protection
- You want a carrier with built-in lighting or reflective elements
Verdict: SportRack Cargo Box + Go Packs is a basic soft shell roof carrier with polypropylene construction and zipper closure, suitable for occasional use but lacking extra features like lighting.
MeeFar 20 cu ft Soft Shell Roof Bag
Best for: drivers needing a waterproof 20 cu ft soft shell bag for any vehicle
- Shell Type
- Soft Shell (what this guide is about)
- Capacity
- 20 cubic feet
- Water Resistance
- 100% waterproof
- Security
- Combination lock
- Installation
- Quick and easy installation in minutes
- Dimensions
- 51 x 40 x 17 in
The MeeFar 20 cu ft soft shell roof bag offers a practical cargo solution for vehicles with or without a roof rack. Made from 700D PVC tarpaulin, it is 100% waterproof and tear-resistant. The 20 cubic feet capacity (51 x 40 x 17 inches) holds 4-6 suitcases or camping gear. It includes a combination lock, anti-slip mat, and six security hooks for quick installation. Ideal for families and travelers needing extra space.
Pros
- 100% waterproof 700D PVC tarpaulin construction
- Works with cars both with and without a roof rack
- Includes combination lock for added security
- Comes with anti-slip mat and 6 security hooks
- Folds into storage bag when not in use
Cons
- No rain flap or extra weather protection listed beyond the material
- Capacity is smaller than many 30-40 cu ft soft shell options on the list
Good fit if
- You want a waterproof roof bag that fits any car or SUV, with or without a roof rack
- You need a compact 20 cu ft option for lighter trips or smaller vehicles
- You prefer a bag that includes a lock and storage bag for easy packing
Skip if
- You need a larger capacity above 20 cubic feet for bulky items
- You want a hard-shell box for rigid protection and aerodynamics
Verdict: MeeFar 20 cu ft Soft Shell Roof Bag is a straightforward, waterproof soft-shell bag for vehicles with or without racks, offering a secure 20 cu ft storage solution with included lock and easy installation.
Specifications side by side
| Spec | Sailnovo 21 cu ft Soft Roof Bag | Mockins 40 cu ft XXL Soft-Shell Roof Bag | Mockins 40 cu ft XXL Roof Bag | Mockins 30 Cu Ft Navy Blue Soft Shell Roof Bag | Mockins 30 cu ft Soft-Shell Vinyl Roof Bag | Rooftop Ranger 21 cu ft Soft Shell Cargo Carrier | MCBD 40 cu ft Soft-Shell Roof Bag | Mockins 40 CuFt XXL Roof Bag | Mockins 35 cu ft Black Roof Bag | Sailnovo 15 cu ft Waterproof Roof Bag | Sailnovo 15 cu ft Soft Shell Roof Bag | SportRack Cargo Box + Go Packs | MeeFar 20 cu ft Soft Shell Roof Bag |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Capacity | 21 cubic feet | 40 cu ft | 40 cu ft | 30 cubic ft | 30 cu ft | 21 cu ft | 40 cu ft | 40 Cubic Feet | 35 cu ft | 15 cubic feet/430 L | 15 cubic feet / 430 L | not specified | 20 cubic feet |
| Shell Type | Soft Shell | Soft-shell | 840D vinyl | not specified | soft-shell vinyl | Soft shell | soft-shell, 900D PVC tarpaulin | Vinyl | Vinyl | Soft Shell | Soft shell | Soft Shell | Soft shell |
| Water Resistance | Waterproof | Waterproof | waterproof | not specified | waterproof | 100% waterproof | 100% waterproof | Waterproof | Waterproof | Waterproof | not specified | not specified | 100% waterproof |
| Security | not specified | not specified | not specified | not specified | combination lock | Security lock | combination lock | Combo lock | not specified | not specified | not specified | not specified | Combination lock |
| Installation | Tie-Down Strap | not specified | not specified | not specified | not specified | Door hooks and straps | not specified | not specified | not specified | not specified | not specified | not specified | Quick and easy installation in minutes |
| Vehicle Compatibility | not specified | not specified | not specified | not specified | vehicles with or without roof rack | With or without roof racks | not specified | Most vehicles, with or without roof rack | not specified | not specified | Fits most cars with or without roof rack | not specified | not specified |
| Dimensions | 9.84 x 7.09 x 13.8 in | 72 x 48 x 20 in | 72 x 48 x 20 in | 60"x43"x20" | 60 x 43 x 20 in | 54 x 42 x 17 in | 72 x 48 x 20 in | 72 x 48 x 20 in | 60 x 42 x 24 in | 14.2 x 9.45 x 7.48 in | 9.84 x 6.89 x 13.4 in | not specified | 51 x 40 x 17 in |
| Recommended Use | not specified | Suitcases, sleeping bags | not specified | not specified | not specified | not specified | not specified | Road trips, camping, moving | not specified | not specified | not specified | not specified | not specified |
| Vehicle Type | Car | Car | Car | not specified | Car, SUV, Truck | Car | Car, SUV | Car, SUV, Truck, Van | Car | Car | Car | not specified | Car |
| Size | 21 Cubic Feet | 40 Cubic Feet | 40 Cubic Feet | 30 Cubic Feet | 30 Cubic Feet | 21 Cubic Feet | 40 Cubic Feet | 40 Cubic Feet | 35 Cubic Ft | 15 cubic feet/430 L | 15 cubic feet/430 L | not specified | 20 Cubic Feet |
| Mount Type | Roof Mount | not specified | not specified | Roof Mount | Roof Mount | Roof Mount | Roof Mount | Roof Mount | Roof Mount | Roof Mount | not specified | not specified | not specified |
| Includes Bag | not specified | not specified | not specified | not specified | With Bag | not specified | With Bag | not specified | not specified | not specified | not specified | not specified | With Bag |
| Weight | 8.16 pounds | 15.7 pounds | 16.5 pounds | 12.4 pounds | 15.5 pounds | 8.5 pounds | 16.3 pounds | 15.8 pounds | 13 pounds | not specified | 5.95 pounds | not specified | not specified |
| Color | Black | Black/Orange | Black | Navy Blue | Black/Orange | Black And Gray | Blue | Black | Black | black | Orange | Black | not specified |
| Model | Sailnovo5033-FR | MA-RB-40BLK-89-V2 | MA-RB-40BLK-72X48X20-89 | MA-RB-30NVYBG-60X43X20-18 | MA-RB-30OR-88-V1 | LTCRB-002 | 40cf | MA-RB-40BLK-89-V1 | MA-RB-35BLK-60X42-17 | AMD005033 | #ASMD005033_2_S_V1 | not specified | MFRBY-20 |
Is a Soft Shell Carrier Worth It for Your Car?
Soft shell carriers offer universal mounting for vehicles without roof racks. They are lightweight, with the Sailnovo 21 cu ft model weighing just 8.16 pounds. You get waterproof storage in capacities ranging from 15 to 40 cubic feet. The trade-off is aerodynamic efficiency. Hard shells reduce drag, while soft bags can increase wind noise and fuel consumption. They are also more exposed to theft and weather damage than rigid containers. Choose this type for occasional trips or rackless vehicles.
Worth it if
- You drive a vehicle without existing roof racks
- You need a lightweight, packable solution for occasional trips
- You prioritize maximum cargo volume over aerodynamic efficiency
Skip it if
- You frequently drive on highways and need fuel efficiency
- You require permanent, secure storage against theft
- You already have a compatible roof rack system
If you pack bedding into your cargo carrier, our guide to the best soft comforters covers their measured dimensions.
How We Selected Soft Shell Bags
We identified soft shell roof bags by scanning Amazon listings for the Shell Type: Soft Shell attribute. We only included one size or variant from each product family to keep the comparison clear. All details come directly from published specifications and feature lists on those listings. We did not handle or test any items physically. This ensures our data reflects what manufacturers state, not personal experience.
We ordered the products by availability first, then by overall rating weighted by count, and finally by how many criteria the specs met. You can see the live prices and stock status on the page, which refresh daily. This method helps you find reliable options quickly. We focused strictly on the data provided to give you a practical, spec-focused view of the best soft shell carriers available.
How to Choose the Right Soft Shell
-
Verify Capacity Needs
Soft shell carriers range from 15 to 40 cubic feet. You must match this volume to your cargo. The Sailnovo 15 cu ft model suits small loads for short trips. The Mockins 40 cu ft XXL offers maximum space for large families. Check the cubic footage in the specs. Larger bags weigh more and may affect fuel economy. Choose the smallest size that fits your gear to maintain vehicle handling and efficiency on the road.
-
Check Physical Dimensions
Capacity alone does not guarantee fit. You must measure your vehicle roof. The Mockins 40 cu ft XXL measures 72 inches long and 48 inches wide. This large footprint requires a spacious roof. The Sailnovo 21 cu ft model is significantly smaller. Measure your roof length and width before buying. Ensure the bag does not overhang dangerously. Proper fit prevents wind lift and ensures the straps secure the bag effectively to your vehicle.
-
Assess Weight Limits
Soft shell bags are lightweight but hold heavy loads. The Sailnovo 21 cu ft model weighs only 8.16 pounds. The Mockins 40 cu ft XXL weighs 15.7 pounds. You must check your vehicle roof rack dynamic weight limit. Most racks support 150 pounds. Do not exceed this limit with gear and the bag. Heavier bags may feel more stable but add to the total load. Balance your gear weight with the bag weight to stay within safe driving limits.
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Confirm Mounting Compatibility
Soft shells use straps, not crossbars. The Mockins 30 cu ft Navy Blue model includes an anti-slip mat. This helps secure the bag on vehicles without roof racks. The Sailnovo 21 cu ft model is designed for roof mount systems. Verify if your vehicle has crossbars or a bare roof. Some bags require specific strap configurations. Ensure the included hardware fits your setup. Proper mounting prevents the bag from shifting or detaching while driving at highway speeds.
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Review Security Features
Soft shells are less secure than hard shells. The Mockins 30 cu ft Vinyl Roof Bag includes a combination lock. This adds a layer of theft deterrence. The Sailnovo 21 cu ft model relies on strap tension. You should use your own padlock if the bag lacks one. Secure your gear inside the bag as well. The soft material offers no impact protection. Locking the bag prevents unauthorized access to your cargo during stops or overnight parking.
Frequently asked questions
Do soft shell roof boxes require a roof rack?
No, they do not. Most models in this guide, such as the Mockins 30 cu ft Navy Blue, are designed for vehicles with or without roof racks. They use universal mounting straps that secure directly to the vehicle body. This makes them compatible with cars, SUVs, trucks, and vans that lack permanent crossbars.
What is the largest capacity available in soft shell carriers?
The maximum capacity listed is 40 cubic feet. Several models, including the Mockins 40 cu ft XXL variants and the MCBD 40 cu ft Soft-Shell Roof Bag, offer this volume. These bags measure 72 inches long and 48 inches wide, providing substantial space for bulky gear like camping equipment or luggage.
How heavy is the lightest soft shell roof bag?
The lightest model is the Sailnovo 15 cu ft Soft Shell Roof Bag, which weighs 5.95 pounds. The Sailnovo 21 cu ft Soft Roof Bag is slightly heavier at 8.16 pounds. These low weights make them easy to handle and install without requiring two people for lifting.
Are soft shell carriers waterproof?
Yes, they are designed to be waterproof. The Sailnovo 15 cu ft Waterproof Roof Bag and the Mockins 30 cu ft Soft-Shell Vinyl Roof Bag explicitly feature waterproof construction. The materials protect your cargo from rain and moisture during transit, ensuring your items remain dry even in wet weather conditions.
Do these bags include locks for security?
Some models include locks, while others do not list them in their specifications. The Mockins 30 cu ft Soft-Shell Vinyl Roof Bag comes with a combination lock. The MeeFar 20 cu ft Soft Shell Roof Bag also includes a lock. You should check the specific product details to confirm if security hardware is included.
Can I use a soft shell box on a van?
Yes, several models are suitable for vans. The Mockins 40 CuFt XXL Roof Bag is listed as compatible with vans and vehicles without a roof rack. Its large 40 cubic feet capacity and universal mounting straps allow it to secure effectively to the flat roof of a van for maximum cargo hauling.
What is the smallest capacity soft shell box?
The smallest capacity is 15 cubic feet. The Sailnovo 15 cu ft Waterproof Roof Bag and the Sailnovo 15 cu ft Soft Shell Roof Bag both offer this volume. These compact carriers are ideal for small loads and fit well on vehicles without roof racks, making them practical for short trips.