Looking Beyond the Sailnovo 15 Cubic Feet/430L Car? 6 Alternatives Worth a Look
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If you need rooftop cargo storage for road trips, exploring sailnovo 15 cubic feet 430l car alternatives helps you evaluate your hauling options. The original Sailnovo carrier provides 15 cubic feet or 430 liters of volume using triple-layer 1000D soft-shell fabric. It weighs 5.6 pounds and secures to vehicles with or without roof racks using reinforced straps and four door hooks. It also folds into an included storage bag and uses waterproof zipper flaps to shield luggage from rain.
You might look elsewhere if you want a rigid hard shell, lockable hardware, or greater capacity for larger vehicles. The 6 alternatives on this list were chosen because their specifications directly overlap with the original carrier, covering rooftop mounts and comparable utility. They let you compare different brands like RoofPax, Asinking, and Auto Dynasty across volume options ranging from 15 up to 50 cubic feet.
Our top pick: Sailnovo 15 cu ft Soft-Shell Roof Bag.
How each alternative compares
Sailnovo 15 cu ft Soft Shell Roof Bag
This second Sailnovo 15 cu ft bag is nearly identical in capacity (15 Cubic Feet) and brand, but its dimensions are much larger: 40.9 x 35.8 x 16.9 inches versus the original’s 9.84 x 6.69 x 13.4 inches. The original is more compact when stored, while this version offers a longer, wider footprint for loading bulky items. It weighs more than the original (data not provided for this model), so installation may be slightly heavier. Choose this if you need the same brand reliability but with a shape that better fits long or wide cargo.
The MeeFar 15 cu ft Roof Bag matches the original’s 15-cubic-foot capacity but is larger in dimensions (44 x 34 x 17 inches) and weighs significantly more (100 kg, likely a data error; expect a heavier bag). It uses a universal roof mount with no door hooks, unlike the original’s 4 door hooks for rackless cars. The MeeFar is a budget-friendly alternative but gives up the original’s reinforced strap seams and door-hook security. Pick this if you prioritize low cost over the original’s more secure rackless attachment.
The FIVKLEMNZ 30 Cubic Feet Roof Bag doubles the original’s capacity (30 vs 15 cu ft) with larger dimensions (60 x 60 x 20 inches) and weighs 12 pounds, more than double the original’s 5.6 pounds. It uses a roof mount without door hooks, so it relies on straps alone for rackless cars, whereas the original includes 4 door hooks for extra security. This bag is best if you need maximum cargo volume and are willing to handle a heavier, bulkier bag that may not fit on smaller roofs.
Sailnovo 21 cu ft Soft Roof Bag
The Sailnovo 21 cu ft Soft Roof Bag offers 21 cubic feet of capacity, 6 more than the original, but its dimensions (9.84 x 7.09 x 13.8 inches) are very similar when stored. It weighs 8.16 pounds, about 2.5 pounds more than the original. It is a soft shell with a roof mount, but the data does not mention door hooks, so it may lack the original’s rackless attachment option. Choose this if you want more capacity from the same brand and can accept the extra weight and possibly less secure rackless fit.
The RoofPax 19 cu ft Polyester Roof Bag has 19 cubic feet capacity, 4 more than the original, and measures 47.2 x 35.4 x 19.8 inches, making it larger in every dimension. It weighs 12.4 pounds, over twice the original’s 5.6 pounds. It uses a roof mount without door hooks, so it may not secure as well on cars without roof racks. The original’s 1000D fabric is likely more tear-resistant than RoofPax’s polyester. Pick this if you need extra capacity and have a roof rack, and can handle a heavier bag.
The Asinking 21 cu ft Soft-Shell Roof Bag provides 21 cubic feet capacity, 6 more than the original, with dimensions 52 x 40 x 18 inches, much larger than the original’s compact 9.84 x 6.69 x 13.4 inches. It weighs 9.48 pounds, nearly double the original. It uses a roof mount without door hooks, so rackless installation may be less secure than the original’s 4-door-hook system. The original’s triple-layer 1000D fabric likely offers better durability than Asinking’s unspecified material. Choose this for larger capacity if you have a roof rack and can accept a heavier bag.
Quick picks
Our 7 picks
Sailnovo 15 cu ft Soft-Shell Roof Bag
Best for: families needing extra cargo space on road trips
- Capacity
- 15 cubic feet / 430 L
- Shell Type
- Soft shell (1000D fabric)
- Installation
- 2 reinforced straps, 4 door hooks
- Vehicle Compatibility
- Fits most cars with or without roof rack
- Dimensions
- 9.84 x 6.69 x 13.4 in
- Weight
- 5.6 pounds
The Sailnovo 15 Cubic Feet/430L roof bag adds 15 cubic feet of weatherproof cargo space on top of your car. It is made from triple-layer 1000D fabric with a waterproof zipper and reinforced seams. The bag fits most cars with or without roof racks using two reinforced straps and four door hooks. It suits families who need extra space for camping or road trips.
Pros
- 15 cubic feet / 430L capacity holds 4-6 suitcases plus tents and sleeping bags
- Triple-layer 1000D fabric is twice as strong as 500D fabric
- Waterproof zipper and double-reinforced seams keep contents dry
- Includes 2 reinforced straps and 4 door hooks for cars with or without roof racks
- Folds into included storage bag when not in use
Cons
- Soft shell offers less security than a hard shell roof box
- Dimensions (9.84 x 6.69 x 13.4 inches) may not fit very long items
- Weighs 5.6 pounds, which is heavier than some comparable soft bags
Good fit if
- You need a budget-friendly soft roof bag for occasional family trips
- You have a car with or without roof racks and want a universal fit
- You want a waterproof bag that folds flat for storage
Skip if
- You need a hard shell roof box for better security and aerodynamics
- You require more than 15 cubic feet of cargo capacity
- You plan to carry heavy or sharp items that could puncture soft fabric
Verdict: Sailnovo 15 Cubic Feet Soft Roof Bag is a practical, weatherproof soft roof bag that offers solid 15-cubic-foot capacity and universal fit for most cars, making it a reliable choice for families needing extra cargo space on trips.
Sailnovo 15 cu ft Soft Shell Roof Bag
Best for: family road trips with waterproof needs
- Capacity
- 15 Cubic Feet / 430L
- Shell Type
- Soft shell
- Water Resistance
- Waterproof
- Installation
- Easy to set up for most vehicles
- Dimensions
- 40.9 x 35.8 x 16.9 in
- Vehicle Type
- Car
This Sailnovo 15 cubic feet/430L soft-shell roof bag offers a waterproof, tearproof design for carrying luggage for 3-5 people. It measures 40.9 x 35.8 x 16.9 inches and features a streamlined shape to reduce wind drag and noise. It fits most vehicles with or without roof racks and installs in minutes.
Pros
- Triple-layer 1000D fabric is 2 times stronger than 500D fabric for tear resistance
- Waterproof zipper and double-reinforced seams keep belongings dry in rain or snow
- Aerodynamic design reduces wind drag and noise for better mileage
- Fits most vehicles with or without roof racks, crossbars, or baskets
Cons
- Soft shell offers less security than a hard shell roof box
- No integrated locking mechanism listed for securing contents
Good fit if
- You need a waterproof roof bag for family trips with 3-5 people
- You want a lightweight, easy-to-install option that works without roof racks
- You prefer a soft shell that can be folded and stored when not in use
Skip if
- You need a hard shell for maximum security and theft protection
- You require a larger capacity than 15 cubic feet for bulky gear
Verdict: Sailnovo 15 Cubic Feet Roof Bag is a durable, waterproof soft shell option that balances capacity and ease of use for road trips and camping.
Sailnovo 21 cu ft Soft Roof Bag
Best for: lightweight, waterproof soft shell cargo on a budget
- 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 roof bag offers 21 cubic feet of waterproof cargo space in a soft shell design. It mounts to your car with tie-down straps and weighs only 8.16 pounds. The bag is available in two sizes, so you can choose the capacity that fits your needs. It suits drivers who want a lightweight, collapsible cargo solution without a hard box.
Pros
- 21 cubic feet capacity provides ample storage for road trips
- Waterproof construction protects your gear from rain
- Lightweight at 8.16 pounds, easy to handle and store when not in use
- Tie-down strap installation requires no permanent roof rack modification
- Available in two size options (21 and 15 cubic feet) for flexibility
Cons
- Soft shell offers less security and protection than a hard shell box
- No included lock or anti-theft mechanism for the bag itself
Good fit if
- You want a budget-friendly, lightweight cargo carrier for occasional use
- You need waterproof storage for camping gear or luggage on a road trip
- You have a car without a factory roof rack and prefer a strap-mounted solution
Skip if
- You require a hard shell for maximum security and durability
- You plan to carry heavy or sharp items that could puncture the soft material
- You need a carrier with a built-in locking system for theft prevention
Verdict: Sailnovo 21 cu ft Soft Shell Roof Bag is a practical soft shell option for drivers who prioritize lightweight, waterproof storage and easy installation over hard-shell security.
RoofPax 23 Cu Ft Rooftop Cargo Carrier Bag
Best for: rackless vehicles needing large 23-cubic-foot rooftop storage
- Capacity
- 23 cubic feet
- Shell Type
- Soft bag (military-grade materials)
- Opening
- Dual-side (implied by double zippers)
- Water Resistance
- Waterproof (double zippers, dual-seam)
- Security
- Tie-down straps (no lock mentioned)
- Installation
- Door hook straps or roof rack
The RoofPax 23 Cubic Feet Rooftop Cargo Bag provides 23 cubic feet of storage, measuring 49.2 inches long, 36.6 inches wide, and 22 inches high. Weighing 11 pounds, it attaches to raised rails, crossbars, baskets, or bare roofs using four included door hooks. It suits you if you need significantly more capacity than standard 15-cubic-foot carriers and want exterior-only attachment straps.
Pros
- Provides 23 cubic feet of storage space measuring 49.2 by 36.6 by 22 inches
- Installs on bare roofs or roof racks using four included door hook straps
- Features dual waterproof closing zippers and dual-seam construction
- Includes ten elastic Velcro strap restraints to secure loose webbing
- Backed by a lifetime zipper warranty and five-year fabric durability warranty
Cons
- Product specifications do not list an included protective roof pad
- Occupies a large roof footprint that requires at least 49.2 inches of length
Good fit if
- You need 23 cubic feet of cargo volume to hold more luggage than a 15-cubic-foot bag.
- You drive a vehicle without a roof rack and want door hooks that avoid routing straps through the cabin.
- You want built-in Velcro restraints to prevent excess strap flapping during travel.
Skip if
- You have a small vehicle roof that cannot accommodate a 49.2-inch by 36.6-inch footprint.
- You want a rigid solid-shell container rather than a flexible fabric rooftop bag.
Verdict: RoofPax 23 Cubic Feet Rooftop Cargo Bag provides high-volume rooftop capacity for rackless vehicles using dedicated door hook anchors rather than through-cabin straps.
Asinking 20 cu ft Waterproof Roof Bag
Best for: drivers needing 20 cubic feet rack-free storage
- 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 Rooftop Cargo Carrier Bag offers 20 cubic feet of storage, measuring 52 by 40 inches with a sloped profile rising from 12 to 18.5 inches. Constructed from 900D PVC tarpaulin with triple-reinforced seams, it protects cargo without requiring an existing roof rack. It includes door hooks, straps rated up to 3,100 pounds, a rubber roof mat, and lockable zippers. This carrier suits travelers needing more volume than a standard 15-cubic-foot bag.
Pros
- 20 cubic feet capacity expands storage beyond standard 15-cubic-foot carriers
- Built from 900D PVC tarpaulin with triple-reinforced seams and gap-free zipper
- Mounts with or without a roof rack using included door hooks and rubber roof mat
- Straps support up to 3,100 pounds with a metal ring attachment design
Cons
- Soft-shell design lacks the rigid outer protection of a solid cargo box
- Large 52 by 40-inch footprint requires adequate roof length on compact cars
Good fit if
- You need 20 cubic feet of packing space on a vehicle without crossbars
- You want heavy-duty 900D PVC fabric with an included protective roof mat
- You prefer a foldable soft carrier that packs down when not in use
Skip if
- You require a rigid hard-shell cargo carrier for solid exterior defense
- You have a vehicle with a roof surface shorter than 52 inches
Verdict: Asinking 20 cu ft Waterproof Cargo Bag delivers five extra cubic feet over standard compact bags while providing 900D PVC construction and rack-free mounting hardware for any vehicle size.
Mockins XXL 50 Cu Ft Roof Bag
Best for: maximum cargo capacity on large vehicle roofs
- Capacity
- 50 cu ft
- Shell Type
- Soft-shell
- Water Resistance
- Waterproof
- Vehicle Compatibility
- No roof rack needed
- Dimensions
- 85 x 50 x 20 in
- Recommended Use
- Tents, sleeping bags, suitcases
If you need significantly more volume than standard carriers, this soft-shell cargo bag provides 50 cubic feet of storage. Built from 840D vinyl with welded seams, it measures 85 by 50 by 20 inches and fits vehicles with or without roof racks. It suits you if you transport bulky gear like tents and suitcases across large SUVs.
Pros
- 50 cubic feet of storage capacity
- Constructed from 840D vinyl with heat-welded seams
- Works on bare roofs without crossbars or rails
- Includes storage bag, straps, hooks, combo lock, and mat
- Backed by a 10-year limited warranty
Cons
- Large 85 by 50 inch footprint requires extensive roof space
- Weighs 19 pounds empty
- Soft-shell vinyl build lacks a rigid hard-shell structure
Good fit if
- You need 50 cubic feet of capacity for large tents and suitcases.
- You drive a vehicle without crossbars or an existing roof rack.
- You want an all-in-one bundle that includes a dedicated storage bag.
Skip if
- You drive a compact vehicle that cannot fit an 85-inch carrier.
- You prefer a rigid hard-shell cargo box over vinyl fabric.
Verdict: Mockins XXL 50 Cu Ft Rooftop Cargo Bag fits drivers of large SUVs and vans who require maximum packable volume without mounting permanent roof racks.
Auto Dynasty Hard Shell 15 cu ft Roof Box
Best for: rigid, lockable storage on vehicle crossbars
- Capacity
- 15 cu ft
- Shell Type
- ABS
- Opening
- passenger side
- Load Capacity
- 110 lb
- Water Resistance
- weather-resistant
- Security
- key lock
The Auto Dynasty 15 cu ft ABS Hard Shell Roof Box gives you rigid exterior storage with an 80-inch length and a 110-pound capacity. Unlike soft cargo bags, this hard shell uses weather-resistant ABS plastic to protect contents from impact and weather. It mounts to crossbars up to 13 inches wide using tool-free brackets and opens from the passenger side. It suits you if you need secure, locked gear storage.
Pros
- Rigid weather-resistant ABS shell protects against impact
- Tool-free mounting brackets fit crossbars up to 13 inches wide
- Key lock system retains key until all latch points are secure
- 80-inch length accommodates long cargo
Cons
- Maximum weight capacity limited to 110 pounds
- Single-side opening restricted to the passenger side
Good fit if
- You want a rigid ABS shell instead of a soft fabric bag.
- You transport long items up to 80 inches in length.
- You have vehicle crossbars up to 13 inches wide.
Skip if
- You plan to pack gear exceeding 110 pounds.
- You require dual-side lid opening for loading.
Verdict: Auto Dynasty 15 cu ft ABS Hard Shell Roof Box fits drivers who need rigid, lockable ABS protection for long travel cargo on roof crossbars.
Specifications side by side
| Spec | Sailnovo 15 cu ft Soft-Shell Roof Bag | Sailnovo 15 cu ft Soft Shell Roof Bag | Sailnovo 21 cu ft Soft Roof Bag | RoofPax 23 Cu Ft Rooftop Cargo Carrier Bag | Asinking 20 cu ft Waterproof Roof Bag | Mockins XXL 50 Cu Ft Roof Bag | Auto Dynasty Hard Shell 15 cu ft Roof Box |
|---|---|---|---|---|---|---|---|
| Capacity | 15 cubic feet / 430 L | 15 Cubic Feet / 430L | 21 cubic feet | 23 cubic feet | 20 cu ft | 50 cu ft | 15 cu ft |
| Shell Type | Soft shell (1000D fabric) | Soft shell | Soft Shell | Soft bag (military-grade materials) | 900D PVC tarpaulin | Soft-shell | ABS |
| Opening | not specified | not specified | not specified | Dual-side (implied by double zippers) | not specified | not specified | passenger side |
| Load Capacity | not specified | not specified | not specified | not specified | not specified | not specified | 110 lb |
| Water Resistance | not specified | Waterproof | Waterproof | Waterproof (double zippers, dual-seam) | 100% waterproof | Waterproof | weather-resistant |
| Security | not specified | not specified | not specified | Tie-down straps (no lock mentioned) | Lock | not specified | key lock |
| Installation | 2 reinforced straps, 4 door hooks | Easy to set up for most vehicles | Tie-Down Strap | Door hook straps or roof rack | Metal ring strap design | not specified | tool-free |
| Vehicle Compatibility | Fits most cars with or without roof rack | not specified | not specified | With or without roof rack | With or without roof rack | No roof rack needed | max 13 in wide cross bar |
| Dimensions | 9.84 x 6.69 x 13.4 in | 40.9 x 35.8 x 16.9 in | 9.84 x 7.09 x 13.8 in | 49.2 x 36.6 x 22 inches | 52 x 40 x 12-18.5 in | 85 x 50 x 20 in | 80 x 30 x 13 in |
| Recommended Use | not specified | not specified | not specified | not specified | not specified | Tents, sleeping bags, suitcases | not specified |
| Vehicle Type | Car | Car | Car | Car | Car | Car | Car |
| Size | 15 Cubic Feet | 15 Cubic Feet | 21 Cubic Feet | 23 Cubic feet | 20 Cubic Feet | 50 Cubic Feet | 15 Cubic Feet |
| Mount Type | not specified | not specified | Roof Mount | Roof Mount | Roof Mount | Roof Mount | not specified |
| Lockable | not specified | not specified | not specified | not specified | Lockable | not specified | not specified |
| Includes Bag | not specified | not specified | not specified | not specified | not specified | With Bag | not specified |
| Weight | 5.6 pounds | not specified | 8.16 pounds | 11 pounds | not specified | 19 pounds | not specified |
| Color | Grey | Grey | Black | Black, Orange, Grey | Black with Blue | Black | Textured Black- A |
| Model | #ASMD005033_S_V1 | 5033_S_V1_1906 | Sailnovo5033-FR | Rooftop_Cargo_Carrier | rooftop cargo bag | MA-RB-50BLK-85X50X20-94 | not specified |
If you require ride-on vehicle measurements, you can compare specifications across kid trax toddler disney cars 3 alternatives.
Frequently asked questions
Which alternative provides a rigid hard shell instead of a soft fabric roof bag?
The Auto Dynasty Hard Shell 15 cu ft Roof Box gives you rigid ABS protection. Measuring 80 inches long by 30 inches wide and 13 inches tall, it provides 15 cubic feet of travel storage. It mounts onto roof crossbars to keep cargo enclosed in a hard container.
What is the highest capacity rooftop carrier option among these alternatives?
The Mockins XXL Roof Bag delivers the largest capacity at 50 cubic feet. It measures 85 inches long, 50 inches wide, and 20 inches high, and weighs 19 pounds. This soft-shell carrier includes an extra storage bag to organize your gear on full-size car roofs.
Can you mount a large cargo carrier if your car does not have roof racks?
Yes, models like the RoofPax 23 Cu Ft Rooftop Cargo Carrier Bag and Asinking 20 cu ft Waterproof Roof Bag support rackless setups. The RoofPax uses door hook anchors instead of cabin straps, while the Asinking carrier includes rack-free mounting hardware to fit your car.
Which cargo carriers offer built-in locking features for security?
Both the Asinking 20 cu ft Waterproof Roof Bag and the Auto Dynasty Hard Shell 15 cu ft Roof Box feature lockable designs. The Asinking model specifies lockable soft storage, while the Auto Dynasty carrier offers rigid ABS shell security when mounted to your vehicle crossbars.
How does the weight of higher-capacity soft bags compare to standard 15-cubic-foot bags?
Larger bags add structural weight as fabric dimensions grow. The original Sailnovo 15 cu ft bag weighs 5.6 pounds. In comparison, the 21-cubic-foot Sailnovo model weighs 8.16 pounds, the RoofPax 23-cubic-foot carrier weighs 11 pounds, and the 50-cubic-foot Mockins bag weighs 19 pounds.
What size step-up should you choose if 15 cubic feet is not enough space?
You can choose between 20, 21, or 23 cubic feet for moderate expansion. The Asinking bag offers 20 cubic feet, the Sailnovo upgrade provides 21 cubic feet, and the RoofPax expands storage to 23 cubic feet, giving you several increments above standard compact sizes.