6 Best Alternatives to the Sailnovo 20 Cubic Feet/580L Car (2026)
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If you need rooftop cargo space, exploring sailnovo 20 cubic feet 580l car alternatives helps you match your vehicle setup to your hauling needs. The original Sailnovo carrier offers 20 cubic feet of volume and uses three layers of 1000D waterproof PVC lining. It secures to bare car roofs or vehicles with roof bars using six door hooks, reinforced straps, and a non-slip mat. It also folds down into an included storage bag when you finish your drive.
Even with those features, you might want a different carrier to fit specific cargo needs, dimensions, or hardware preferences. You may prefer a slightly different capacity like 19 or 21 cubic feet, built-in lock hardware, or a metal basket combo. The 6 alternatives featured for 2026 were chosen because their specifications directly overlap with the original Sailnovo design, giving you comparable soft-shell flexibility with varied feature sets.
Our top pick: Sailnovo 20 cu ft Roof Bag.
How each alternative compares
Asinking 20 cu ft Waterproof Roof Bag
The Asinking 20 cu ft Roof Bag matches the original Sailnovo's 20 cubic feet capacity but adds a lock for security, something the Sailnovo lacks. Its dimensions (52 x 40 x 18.5 in) are slightly larger, which may affect fit on smaller roofs. The Asinking is a budget-friendly choice if you want a lockable bag and are okay with a less established brand. It gives up the Sailnovo's 1000D PVC and extended rain curtain, but still claims 100% waterproof protection. Pick this if a lock is a priority and you want to save money.
The Kingfun 20 cu ft Roof Bag offers the same 20 cubic feet capacity as the Sailnovo but in a black color option. It includes a covered zipper for extra weather protection, a feature not specified on the Sailnovo. The Kingfun does not list a rain curtain or 1000D PVC, so its waterproofing may be less robust. It is a solid alternative if you prefer a covered zipper design and a neutral color. Pick this if you want a universal-fit soft bag with a zipper shield and are willing to trade the Sailnovo's heavy-duty material specs.
The KJTYSDM Rooftop Cargo Carrier Bag is sized 51 x 39 x 17 in, matching the Sailnovo's dimensions, but adds a combination lock for security. It weighs only 2.2 pounds, much lighter than the Sailnovo's 8.93 pounds, making it easier to handle. However, it does not specify a 1000D PVC shell or rain curtain, so its weather resistance may be less. It fits vehicles with or without racks and packs away for storage. Pick this if you want a lockable, lightweight bag and are less concerned about heavy-duty waterproofing.
The Sailnovo 15 cu ft Roof Bag is a smaller version of the original, offering 15 cubic feet (430L) versus the 20 cu ft (580L) model. It is more compact and lighter, making it easier to store and install. It uses the same 1000D waterproof PVC shell and rain curtain, so waterproofing is comparable. The trade-off is less capacity, suitable for 2-4 people instead of 5-8. Pick this if you need a smaller, foldable bag for shorter trips or a smaller vehicle. It gives up the larger capacity but keeps the same build quality.
The Sailnovo 21 cu ft Foldable Roof Box offers slightly more capacity (21 cubic feet) than the original 20 cu ft model. It is heavier at 11.3 pounds versus 8.93 pounds, and its dimensions (47 x 35 x 21 in) are different, being shorter and taller. It uses a similar orange color and foldable design. It does not specify 1000D PVC or a rain curtain, so waterproofing may be less. Pick this if you want a bit more volume and are okay with a heavier bag. It gives up the original's specific waterproofing specs for extra space.
MeeFar 20 cu ft Soft Shell Roof Bag
The MeeFar 20 cu ft Soft Shell Roof Bag matches the Sailnovo's 20 cubic feet capacity but includes a combination lock for security. It comes with its own storage bag, similar to the Sailnovo. The MeeFar does not specify a 1000D PVC shell or rain curtain, so its waterproofing may be less durable. It is a budget-friendly alternative that adds a lock. Pick this if you want a lockable bag with the same capacity and a storage bag included. It gives up the Sailnovo's heavy-duty material for a lower price point.
Quick picks
Our 7 picks
Sailnovo 20 cu ft Roof Bag
Best for: large family trips needing waterproof, foldable cargo storage
- Capacity
- 20 cu ft / 580L
- Shell Type
- 1000D waterproof PVC
- Water Resistance
- Waterproof
- Installation
- Straps, door hooks, non-slip mat
- Vehicle Compatibility
- With or without roof bars
- Dimensions
- 51 x 39 x 17 in
This Sailnovo roof bag offers 20 cubic feet (580L) of storage capacity, with dimensions of 51 x 39 x 17 inches. It is made from three layers of 1000D waterproof PVC and includes a 13cm rain curtain for extra protection. The bag installs with straps, door hooks, and a non-slip mat, and fits vehicles with or without roof bars. It suits travelers needing a large, waterproof cargo solution for family trips.
Pros
- 20 cu ft / 580L capacity fits luggage for 5-8 people
- Three-layer 1000D waterproof PVC with 13cm rain curtain
- Includes 6 reinforced straps, 6 safety door hooks, and 2 adjustable straps
- Non-slip mat with reflective strip for night visibility
- Folds into storage bag when not in use
Cons
- Soft shell offers less security than a hard roof box
- No built-in lock; relies on straps and door hooks
- Requires manual folding and storage after each use
Good fit if
- You need a large, foldable roof bag for family trips
- You want a waterproof option that works with or without roof bars
- You prefer a soft shell that stores compactly when not in use
Skip if
- You want a hard-shell roof box for maximum security
- You need a permanent, lockable cargo solution
- You prefer a bag that stays mounted without removal
Verdict: Sailnovo 20 Cubic Feet Roof Bag is a practical, large-capacity soft-shell roof bag with strong waterproofing and universal fit, ideal for occasional travelers who value storage and foldability over hard-shell security.
Asinking 20 cu ft Waterproof Roof Bag
Best for: budget shoppers needing a waterproof, lockable roof bag
- Capacity
- 20 cu ft
- Shell Type
- 900D PVC tarpaulin
- Water Resistance
- 100% waterproof
- Security
- Lock
- Installation
- Metal ring strap design
- Vehicle Compatibility
- With or without roof rack
The Asinking 20 cu ft Roof Bag is a soft-shell cargo carrier made from 900D PVC tarpaulin with triple-reinforced seams and a double-flap zipper for 100% waterproof protection. It fits any vehicle, with or without a roof rack, and uses a metal ring strap design for easy installation. The bag measures 52 x 40 x 12-18.5 inches and includes a lock for security. It suits budget-conscious travelers who need reliable weather protection.
Pros
- 100% waterproof 900D PVC tarpaulin with triple-reinforced seams and no exposed stitching
- Lockable zipper for added security
- Fits any vehicle, with or without a roof rack or side rails
- Aerodynamic shape (lower front, higher back) for quiet, fuel-efficient driving
- Foldable design stores compactly when not in use
Cons
- Soft shell offers less protection against impacts than a hard roof box
- Maximum height of 18.5 inches may limit tall items
- No crossbars included; relies on metal ring straps for attachment
Good fit if
- You want a fully waterproof soft cargo bag with a lock
- You drive a car without a roof rack and need a strap-based installation
- You prioritize low cost and easy storage over hard-shell rigidity
Skip if
- You need a hard shell to protect items from crushing or theft
- You prefer a cargo box with a fixed, rigid shape
- You require a carrier with a higher capacity than 20 cubic feet
Verdict: Asinking 20 cu ft Roof Bag is a budget-friendly soft cargo carrier that delivers 100% waterproof protection and a lock, making it a practical choice for road trips on any vehicle.
MeeFar 20 cu ft Soft Shell Roof Bag
Best for: budget-friendly waterproof roof bag with lock
- Capacity
- 20 cubic feet
- Shell Type
- Soft shell
- 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 roof bag is a soft-shell cargo carrier that works on any car, with or without a roof rack. It offers 20 cubic feet of space (51 x 40 x 17 inches) and is made from 700D PVC tarpaulin that is 100% waterproof. A combination lock secures the zippers. It folds into a storage bag when not in use.
Pros
- Universal fit for cars with or without a roof rack
- 100% waterproof 700D PVC tarpaulin construction
- Includes combination lock for zipper security
- Comes with anti-slip mat, luggage lock, and 6 security hooks
- Folds into included storage bag
Cons
- Soft shell offers less protection than a hard shell box
- No built-in lighting or reflective elements listed
Good fit if
- You want a waterproof roof bag that works on any car, even without a roof rack
- You need 20 cubic feet of extra cargo space for items like suitcases or camping gear
- You prefer a soft bag that folds away for compact storage
Skip if
- You need a hard-shell roof box for maximum security and aerodynamics
- You want a cargo carrier with integrated lights or a locking mechanism beyond a zipper lock
Verdict: MeeFar 20 cu ft Soft Shell Roof Bag is a practical, waterproof soft-shell option that fits any car, includes a combination lock, and packs away into its own bag.
MeeFar 21 cu ft Waterproof Roof Bag
Best for: rack-free rooftop hauling on larger vehicles
- Capacity
- 21 cu ft
- Shell Type
- 800D PVC tarpaulin
- Water Resistance
- 100% waterproof
- Security
- combination lock
- Vehicle Compatibility
- with or without roof rack
- Dimensions
- 47 x 35 x 22 in
This MeeFar cargo carrier provides 21 cubic feet of rooftop storage for vehicles with or without roof racks. Built from 800D PVC tarpaulin, it includes a waterproof zipper, six door hooks, and a combination lock. The 47 by 35 by 22-inch footprint holds four to six suitcases. It suits you if you need oversized soft-shell capacity without installing permanent crossbars.
Pros
- 21 cubic feet of volume holds 4 to 6 suitcases
- Heavy-duty 800D PVC tarpaulin waterproof construction
- Works on bare roofs using 6 included door hooks
- Includes a combination lock for zipper pulls
Cons
- Weighs 10.7 pounds empty
- Comes only in orange
Good fit if
- You need 21 cubic feet of capacity for bulky luggage or camping gear.
- You drive a vehicle without crossbars and rely on door hooks.
- You want built-in zipper security with an included combination lock.
Skip if
- You prefer a neutral exterior color over bright orange.
- You require a rigid hard-shell cargo carrier.
Verdict: MeeFar 21 Cubic Feet Waterproof Roof Bag fits travelers needing high-volume rooftop storage and rack-free mounting using door hooks.
Sailnovo 21 cu ft Soft Roof Bag
Best for: bare-roof vehicles needing 21 cubic feet storage
- Capacity
- 21 cubic feet
- Shell Type
- Soft Shell
- Water Resistance
- Waterproof
- Installation
- Tie-Down Strap
- Dimensions
- 9.84 x 7.09 x 13.8 in
- Vehicle Type
- Car
This Sailnovo soft-shell rooftop bag offers 21 cubic feet of waterproof storage, giving you extra cargo volume over standard 20-cubic-foot carriers. It secures to your car roof using tie-down straps, making it usable on vehicles without luggage racks. At 8.16 pounds, it provides large capacity while keeping unloaded weight low for easier handling.
Pros
- 21 cubic feet of cargo capacity
- Waterproof soft-shell design
- Secures with tie-down straps on cars without luggage racks
- Lightweight empty weight of 8.16 pounds
Cons
- Soft-shell fabric lacks the structural rigidity of a hard carrier
- Uses strap tie-downs instead of fixed mechanical mounting hardware
Good fit if
- You need 21 cubic feet of waterproof overhead cargo space.
- You drive a vehicle without pre-installed roof racks.
- You want an empty carrier that weighs 8.16 pounds.
Skip if
- You require a rigid hard-shell rooftop container.
- You prefer a smaller capacity like the 15-cubic-foot version.
Verdict: Sailnovo 21 Cubic Feet Soft Roof Bag suits drivers who need waterproof overhead storage on bare-roof vehicles without installing permanent crossbars.
RoofPax 19 cu ft Polyester Roof Bag
Best for: vehicles without roof racks or crossbars
- Capacity
- 19 Cubic feet
- Shell Type
- polyester
- Water Resistance
- 100% waterproof
- Installation
- door hook straps, 10 straps
- Vehicle Compatibility
- fits cars with or without roof rack
- Dimensions
- 47.2 x 35.4 x 19.8 in
This soft-shell carrier provides 19 cubic feet of storage space and measures 47.2 by 35.4 by 19.8 inches. Constructed from waterproof polyester, it features dual zippers, double-seam technology, and water-repellent coating. You can install it on bare roofs or crossbars using the four door hooks and 10 straps. It suits drivers seeking secure mounting on vehicles without roof racks.
Pros
- Includes 4 patented door hook straps for mounting without a roof rack
- Made from waterproof polyester with double seams and dual zippers
- Comes with 10 connection straps and a dedicated storage bag
- Provides a 5-year fabric durability warranty and lifetime zipper warranty
Cons
- Provides 19 cubic feet of capacity, which is smaller than 20-cubic-foot options
- Empty weight is 12.4 pounds
Good fit if
- You need to mount cargo on a car without roof racks or side rails
- You prefer polyester fabric over PVC construction
- You want long-term warranty coverage on zippers and fabric
Skip if
- You require 20 cubic feet or more of packable interior volume
- You want an empty carrier that weighs less than 12.4 pounds
Verdict: RoofPax 19 Cubic Feet Rooftop Cargo Bag fits travelers needing a rack-free mounting system with documented strap hardware. It trades one cubic foot of volume compared to 20-cubic-foot alternatives for multi-year warranty coverage and polyester construction.
HubPax 20 cu ft Roof Basket & Bag
Best for: large vehicles carrying heavy, weather-protected gear
- Capacity
- 20 cu ft
- Shell Type
- soft shell
- Load Capacity
- 200 lbs
- Water Resistance
- waterproof
- Installation
- U-bolt mounting
- Vehicle Compatibility
- most vehicles with roof cross bars
This setup pairs a 65-by-39-by-6-inch roof basket with a 20-cubic-foot waterproof soft shell bag. You get a 200-pound load capacity along with an included cargo net and ratchet straps. It mounts using four U-bolts and requires existing crossbars. It suits you if you need both a rigid platform and weather protection on larger vehicle roofs.
Pros
- Includes both a 65-inch basket and a 20-cubic-foot waterproof bag
- Supports up to 200 pounds of gear
- Comes with cargo net and ratchet tie-down straps
- Installs securely with 4 sets of U-bolts
Cons
- Requires roof cross bars that are not included
- Requires a large vehicle roof to fit the 65-by-39-inch basket
Good fit if
- You have an SUV, truck, or van equipped with roof cross bars.
- You want a rigid carrier basket paired with an enclosed waterproof bag.
- You need to haul heavy gear weighing up to 200 pounds.
Skip if
- You do not have cross bars installed on your vehicle roof.
- You drive a small vehicle that cannot fit a 65-inch-long basket.
Verdict: HubPax 20 Cu Ft Basket and Cargo Bag Combo is built for large vehicle owners with cross bars who need high weight capacity and enclosed weather protection.
Specifications side by side
| Spec | Sailnovo 20 cu ft Roof Bag | Asinking 20 cu ft Waterproof Roof Bag | MeeFar 20 cu ft Soft Shell Roof Bag | MeeFar 21 cu ft Waterproof Roof Bag | Sailnovo 21 cu ft Soft Roof Bag | RoofPax 19 cu ft Polyester Roof Bag | HubPax 20 cu ft Roof Basket & Bag |
|---|---|---|---|---|---|---|---|
| Capacity | 20 cu ft / 580L | 20 cu ft | 20 cubic feet | 21 cu ft | 21 cubic feet | 19 Cubic feet | 20 cu ft |
| Shell Type | 1000D waterproof PVC | 900D PVC tarpaulin | Soft shell | 800D PVC tarpaulin | Soft Shell | polyester | soft shell |
| Load Capacity | not specified | not specified | not specified | not specified | not specified | not specified | 200 lbs |
| Water Resistance | Waterproof | 100% waterproof | 100% waterproof | 100% waterproof | Waterproof | 100% waterproof | waterproof |
| Security | not specified | Lock | Combination lock | combination lock | not specified | not specified | not specified |
| Installation | Straps, door hooks, non-slip mat | Metal ring strap design | Quick and easy installation in minutes | not specified | Tie-Down Strap | door hook straps, 10 straps | U-bolt mounting |
| Vehicle Compatibility | With or without roof bars | With or without roof rack | not specified | with or without roof rack | not specified | fits cars with or without roof rack | most vehicles with roof cross bars |
| Dimensions | 51 x 39 x 17 in | 52 x 40 x 12-18.5 in | 51 x 40 x 17 in | 47 x 35 x 22 in | 9.84 x 7.09 x 13.8 in | 47.2 x 35.4 x 19.8 in | 65 x 39 x 6 in |
| Vehicle Type | Car | Car | Car | Car | Car | Car | not specified |
| Size | 20 Cubic Feet | 20 Cubic Feet | 20 Cubic Feet | 21 Cubic Feet | 21 Cubic Feet | 19 Cubic feet | 20 Cubic Feet |
| Mount Type | not specified | Roof Mount | not specified | Roof Mount | Roof Mount | Roof Mount | Roof Mount |
| Lockable | not specified | Lockable | not specified | not specified | not specified | not specified | not specified |
| Includes Bag | not specified | not specified | With Bag | not specified | not specified | not specified | With Bag |
| Weight | 8.93 pounds | not specified | not specified | 10.7 pounds | 8.16 pounds | 12.4 pounds | not specified |
| Color | Orange | Black with Blue | not specified | Orange | Black | ['Black', 'Orange', 'Grey'] | black and orange |
| Model | *#ASMD005033_2_M_V1 | rooftop cargo bag | MFRBY-20 | 21 Cubic Feet | Sailnovo5033-FR | Rooftop_Cargo_Carrier | BASKET |
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Frequently asked questions
Which alternative provides more storage capacity than the Sailnovo 20 cubic feet bag?
You can choose the MeeFar 21 cu ft Waterproof Roof Bag or the Sailnovo 21 cu ft Soft Roof Bag. Both options provide 21 cubic feet of space instead of 20. The MeeFar 21 cu ft measures 47 by 35 by 21 inches and weighs 10.7 pounds, while the Sailnovo 21 cu ft weighs 8.16 pounds.
What is the lightest alternative to the 20 cubic foot Sailnovo roof carrier?
The Sailnovo 21 cu ft Soft Roof Bag is the lightest listed option at 8.16 pounds. That makes it lighter than the Sailnovo 20 cu ft bag at 8.93 pounds, the MeeFar 21 cu ft bag at 10.7 pounds, and the RoofPax 19 cu ft bag at 12.4 pounds.
Which Sailnovo alternative includes both a roof basket and a cargo bag?
The HubPax 20 cu ft Roof Basket & Bag is the option that includes both components. It delivers 20 cubic feet of cargo volume and measures 65 inches long, 39 inches wide, and 6 inches high. The unit comes in black and orange and uses standard car roof mounting.
What options exist if you want a slightly smaller alternative carrier?
The RoofPax 19 cu ft Polyester Roof Bag offers a slightly more compact alternative with 19 cubic feet of volume. Its dimensions measure 47.2 inches long, 35.4 inches wide, and 19.8 inches high. It weighs 12.4 pounds and is available in black, orange, and grey.
Which 20 cubic foot alternatives include their own dedicated storage bag?
The MeeFar 20 cu ft Soft Shell Roof Bag and the HubPax 20 cu ft carrier both include an extra bag in their specifications. MeeFar model MFRBY-20 packs away into its own pouch, while HubPax pairs its roof basket design with a designated bag for your car.
How many alternative carriers are featured in this 2026 guide?
This guide highlights 6 total cargo carriers as options for your vehicle. Across the list, sizes range from 19 cubic feet on the RoofPax carrier up to 21 cubic feet on the MeeFar and Sailnovo models. Most units use standard car roof mount attachments for transport.