6 Best Alternatives to the Kingfun Rooftop Cargo Carrier Bag (2026)
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You are looking for kingfun rooftop cargo carrier bag alternatives because the original model may not fit your specific needs. The Kingfun 20 cu ft bag offers waterproof protection and versatile mounting for vehicles without roof racks. However, you might need a different capacity, a lockable design, or a wider footprint for bulky gear. These soft-shell carriers provide flexible storage, but their specifications vary significantly across brands.
The 6 options below were chosen because their specs overlap with the Kingfun carrier. This list includes models with varying capacities, from 19 to 40 cubic feet, and different material constructions. Some alternatives feature lockable zippers for added security, while others prioritize extra width for larger loads. You can compare dimensions, weight, and mounting methods to find the best match for your vehicle and cargo requirements.
Our top pick: Kingfun 20 cu ft Roof Bag.
How alternatives compare to Kingfun
Asinking 20 cu ft Waterproof Roof Bag
The Asinking 20 cu ft bag matches the Kingfun capacity but adds lockable security, a feature the Kingfun lacks. It offers a defined external size of 52 by 40 by 18.5 inches, providing a more structured shape than the Kingfun’s flexible soft shell. You get waterproof integrity and peace of mind against theft. However, you do not get the Kingfun’s integrated anti-slip mat or the specific door hook configuration. If you prioritize security over universal strap versatility, this lockable option is a practical upgrade for bare roofs without racks.
Sailnovo 21 cu ft Soft Roof Bag
The Sailnovo 21 cu ft bag provides slightly more volume than the Kingfun’s 20 cu ft capacity. It weighs 8.16 pounds, which is lighter than many rigid carriers, making it easier to handle. Like the Kingfun, it mounts directly to bare roofs using straps and hooks. It features a soft shell design similar to the Kingfun’s triple-strength material. You gain an extra cubic foot of space for gear. You give up the Kingfun’s specific anti-slip matting. This is a solid choice if you need a lightweight, budget-friendly option with comparable waterproof protection for standard SUVs.
RoofPax 19 cu ft Polyester Roof Bag
The RoofPax 19 cu ft bag offers less capacity than the Kingfun’s 20 cu ft volume. It weighs 12.4 pounds, making it heavier than the Sailnovo but comparable to other soft bags. Its dimensions are 47.2 by 35.4 by 19.8 inches, which may fit narrower vehicles better than the Kingfun. It provides reliable waterproof protection for cars without roof racks. You sacrifice some storage space for a potentially better fit on smaller cars. It is a good alternative if your vehicle is compact and you need secure, rack-free mounting without the bulk of larger carriers.
BagMate 23 cu ft Roof Bag – 840D PVC
The BagMate 23 cu ft bag offers significantly more volume than the Kingfun’s 20 cu ft capacity. It is constructed from 840D PVC, offering durable waterproof protection. The external dimensions are 55 by 44.9 by 19.5 inches, making it wider and longer than the Kingfun. It weighs 13.1 pounds. You gain ample space for larger loads while maintaining rack-free installation. You give up the Kingfun’s slightly more compact profile. This option is ideal for drivers who need maximum storage in a soft-shell format and have wider roofs to accommodate the larger footprint.
ARKSEN 31.5 Cu Ft Extra-Wide Roof Bag
The ARKSEN 31.5 cu ft bag provides nearly double the capacity of the Kingfun’s 20 cu ft volume. It is an extra-wide option measuring 62.2 by 48.4 by 18.1 inches. It weighs 17.5 pounds, which is substantial. This carrier is designed for bulky items like tents or multiple suitcases. You get massive storage space and heavy-duty protection. You sacrifice the Kingfun’s lower profile and easier handling. This is the best choice for adventurers with wide-roof vehicles who need to transport large gear and do not mind the increased wind resistance and weight of a larger soft-shell carrier.
MCBD 40 cu ft Soft-Shell Roof Bag
The MCBD 40 cu ft bag offers the largest capacity in this group, far exceeding the Kingfun’s 20 cu ft volume. It is a soft-shell design that includes a storage bag. It weighs 16.3 pounds. The dimensions are listed as 1 inch in the data, which appears to be a placeholder, but the capacity indicates a very large footprint. You get maximum storage for wide-roof vehicles and flexible soft-shell design. You give up the Kingfun’s more manageable size. This is the top pick for those needing extreme volume and who prioritize waterproof capacity over aerodynamic efficiency or compact storage when not in use.
Quick picks
Our 7 picks
Kingfun 20 cu ft Roof Bag
Best for: Families needing flexible interior space
- Capacity
- 20 cu ft
- Shell Type
- Soft-shell
- Water Resistance
- Waterproof
- Security
- Locks
- Installation
- Straps and door hooks
- Vehicle Compatibility
- With or without roof racks
This Kingfun rooftop cargo carrier offers 20 cubic feet of storage in a soft, waterproof shell. It uses heavy-duty straps and door hooks for installation, fitting vehicles with or without existing roof racks. The triple-strength material and covered zipper protect gear from rain and road spray. You get a foldable design for easy trunk storage. This bag frees up interior space for passengers and pets during family trips or road journeys.
Pros
- 20 cubic feet capacity for luggage and gear
- Triple-strength waterproof material with covered zipper
- Fits vehicles with or without roof racks
- Includes 8 straps and 6 door hooks
- Folds compactly for storage
Cons
- 20 cubic feet capacity is smaller than the 30 cubic feet option in this list
- Soft shell design offers less aerodynamic stability than hard cases
- Door hook installation may not fit all vehicle door frames
Good fit if
- You need to free up interior seating for family or pets
- Your vehicle lacks a permanent roof rack system
- You want a lightweight bag that folds flat for storage
Skip if
- You require more than 20 cubic feet of cargo space
- You prefer a rigid hard case for better highway aerodynamics
- Your vehicle door frames cannot accommodate the included hooks
Verdict: Kingfun 20 Cu Ft Waterproof Roof Bag provides reliable weather protection and versatile mounting for standard SUVs and sedans. It is a practical solution for buyers who need flexible storage without permanent roof rack installation.
Asinking 20 cu ft Waterproof Roof Bag
Best for: lockable waterproof storage without roof racks
- 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
This Asinking roof bag offers 20 cubic feet of storage in a 52 x 40 inch footprint. It features 100% waterproof 900D PVC tarpaulin construction with triple-reinforced seams and a double-flap zipper. The design includes metal ring straps for easy installation on cars with or without racks. It is lockable for security and fits vehicles with or without sunroofs.
Pros
- 20 cubic feet capacity
- 100% waterproof 900D PVC tarpaulin
- Lockable for security
- Fits cars with or without roof racks
Cons
- 20 cubic feet capacity is smaller than the 30 Cu Ft FIVKLEMNZ option
- Soft shell lacks the rigid protection of a hard cargo box
- Maximum height is 18.5 inches, limiting vertical storage for tall items
Good fit if
- You need a lockable soft cargo bag for secure transport
- You drive a car without roof racks and need rack-compatible straps
- You want 100% waterproof protection for luggage in rain
Skip if
- You require more than 20 cubic feet of storage space
- You prefer a rigid hard shell for maximum impact protection
- You need a bag that fits over existing roof racks only
Verdict: Asinking 20 Cu Ft Lockable Roof Bag is a secure, waterproof option for drivers without roof racks who need moderate capacity. It suits those prioritizing lockable security and waterproof integrity over maximum volume.
Sailnovo 21 cu ft Soft Roof Bag
Best for: cars without roof racks
- 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 storage in a soft shell design. It weighs 8.16 pounds and measures 9.84 x 7.09 x 13.8 inches. The bag is waterproof and uses tie-down straps for installation. It fits cars without existing roof racks. This option suits you if you need flexible cargo space for weekend trips.
Pros
- 21 cubic feet capacity
- Waterproof construction
- Soft shell folds flat
- Lightweight at 8.16 pounds
Cons
- No hard shell protection
- Requires manual tie-down straps
- No integrated mounting system
Good fit if
- You have a car without roof rails
- You need extra storage for luggage
- You want a lightweight carrier
Skip if
- You prefer rigid hard shell carriers
- You need a built-in mounting system
- You want a smaller 15 cubic feet size
Verdict: Sailnovo 21 Cu Ft Soft Shell Roof Bag provides ample soft storage for cars lacking roof racks. It is a practical choice for travelers needing flexible, waterproof cargo space.
RoofPax 19 cu ft Polyester Roof Bag
Best for: cars without roof racks needing waterproof storage
- 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 RoofPax carrier offers 19 cubic feet of storage in a 12.4-pound polyester shell. It features dual zippers and double-seam construction for waterproof protection. The bag installs using four patented door hook straps or standard crossbars. It fits vehicles with or without existing roof racks. You should consider this if you need a secure, weather-resistant solution for car travel.
Pros
- Patented 4-door hook straps for secure mounting
- 100% waterproof polyester shell with dual zippers
- Universal fit for cars with or without racks
- Includes 10 sturdy straps for side and back connection
Cons
- 19 cubic feet capacity is smaller than many competitors
- 12.4-pound weight is heavier than some soft bags
- No mention of a carrying bag for storage
Good fit if
- You need a waterproof bag for rain or snow trips
- You drive a car without a roof rack
- You prioritize secure door-hook mounting over speed
Skip if
- You need more than 19 cubic feet of space
- You want a lightweight bag under 10 pounds
- You already have a roof rack and want faster installation
Verdict: RoofPax 19 Cu Ft Waterproof Cargo Bag is a secure, waterproof option for drivers without roof racks who need reliable protection for their gear.
BagMate 23 cu ft Roof Bag – 840D PVC
Best for: Universal roof mounting without racks
- Capacity
- 23 cu ft
- Shell Type
- 840D PVC
- Water Resistance
- 100% waterproof
- Dimensions
- 55" L x 44.9" W x 19.5" H
- Vehicle Type
- Car, SUV
- Mount Type
- Roof Mount
The BagMate roof bag offers 23 cubic feet of storage in a 55-inch length and 44.9-inch width. It uses 840D PVC fabric with heat-welded seams for 100% waterproof protection. The design includes a protective mat and installs via door hooks on vehicles without racks. This bag suits travelers needing moderate capacity and universal mounting options for SUVs or sedans.
Pros
- 23 cubic feet of storage capacity
- 840D PVC shell with heat-welded seams
- Universal installation with door hooks
- Includes non-slip protective roof mat
Cons
- Narrower 44.9-inch width than wider competitors
- Lower capacity than 31.5 or 40 cubic feet options
- Heavier at 13.1 pounds than some alternatives
Good fit if
- You need universal mounting on vehicles without roof racks
- You want a balance of capacity and manageable size
- You prioritize waterproof durability with 840D PVC
Skip if
- You require extra-wide storage for bulky items
- You need maximum capacity over 30 cubic feet
- You prefer lighter bags under 10 pounds
Verdict: BagMate 23 Cu Ft Roof Bag fits drivers who need reliable, rack-free installation and solid waterproof protection without the bulk of the largest carriers. It is a practical option for standard luggage loads.
ARKSEN 31.5 Cu Ft Extra-Wide Roof Bag
Best for: extra-wide loads and bulky gear
- Capacity
- 31.5 cubic feet
- Shell Type
- 500D PVC tarpaulin
- Water Resistance
- waterproof
- Dimensions
- 62.2 x 48.43 x 18.11 in
- Vehicle Type
- Car
- Mount Type
- Roof Mount
The ARKSEN roof bag offers 31.5 cubic feet of storage in an extra-wide 48.43-inch design. It is constructed from 500D PVC tarpaulin with waterproof zippers and a UV-resistant shell. The bag includes an anti-slip mat and ten reinforced straps for secure transport. This heavy-duty carrier weighs 17.5 pounds and fits roof racks on most cars. It suits buyers needing maximum width and high capacity for bulky gear.
Pros
- 31.5 cubic feet of extra-wide storage
- 48.43-inch width for bulky items
- 500D PVC tarpaulin with waterproof zippers
- Includes anti-slip mat and 10 straps
- UV inhibitors for fade resistance
Cons
- Heavier at 17.5 pounds than competitors
- No mention of integrated lock system
- Limited height options for this specific model
Good fit if
- You need extra width for wide luggage
- You want high capacity for large trips
- You prefer heavy-duty waterproof materials
Skip if
- You have a narrow roof rack
- You need a lightweight carrier
- You want a built-in locking mechanism
Verdict: ARKSEN 31.5 Cu Ft Extra-Wide Roof Bag fits drivers who prioritize maximum width and heavy-duty protection for large loads. It is ideal for transporting bulky items like tents or multiple suitcases on wider roof racks.
MCBD 40 cu ft Soft-Shell Roof Bag
Best for: Large vehicles needing maximum soft-shell volume
- Capacity
- 40 cu ft
- Shell Type
- soft-shell, 900D PVC tarpaulin
- Water Resistance
- 100% waterproof
- Security
- combination lock
- Dimensions
- 72 x 48 x 20 in
- Vehicle Type
- Car, SUV
The MCBD 40 cubic feet roof bag offers substantial storage for long trips. It measures 72 by 48 by 20 inches and weighs 16.3 pounds. The soft-shell design uses 900D PVC tarpaulin for 100% waterproof protection. It includes six door hooks, two ratchet straps, and a combination lock. You should choose this if you need extra-wide capacity for large SUVs or trucks with cross bars.
Pros
- 40 cubic feet capacity for maximum volume
- 100% waterproof 900D PVC tarpaulin shell
- Includes combination lock for security
- Fits roofs 68-80 inches wide
- Comes with anti-slip mat and door hooks
Cons
- Soft-shell design is less rigid than hard cases
- Requires cross bars or side rails for mounting
- Large footprint may not fit smaller vehicles
Good fit if
- You need the largest available capacity for gear
- You drive a large SUV or truck with wide roof rails
- You prioritize waterproof soft-shell storage over hard cases
Skip if
- You drive a compact car with a narrow roof
- You require a rigid hard-shell carrier for aerodynamics
- Your roof width is less than 68 inches
Verdict: MCBD 40 Cu Ft Soft-Shell Roof Bag is the best option for adventurers with wide-roof vehicles who need maximum storage volume. It fits buyers who prioritize waterproof capacity and flexible soft-shell design over rigid aerodynamics.
Specifications side by side
| Spec | Kingfun 20 cu ft Roof Bag | Asinking 20 cu ft Waterproof Roof Bag | Sailnovo 21 cu ft Soft Roof Bag | RoofPax 19 cu ft Polyester Roof Bag | BagMate 23 cu ft Roof Bag – 840D PVC | ARKSEN 31.5 Cu Ft Extra-Wide Roof Bag | MCBD 40 cu ft Soft-Shell Roof Bag |
|---|---|---|---|---|---|---|---|
| Capacity | 20 cu ft | 20 cu ft | 21 cubic feet | 19 Cubic feet | 23 cu ft | 31.5 cubic feet | 40 cu ft |
| Shell Type | Soft-shell | 900D PVC tarpaulin | Soft Shell | polyester | 840D PVC | 500D PVC tarpaulin | soft-shell, 900D PVC tarpaulin |
| Water Resistance | Waterproof | 100% waterproof | Waterproof | 100% waterproof | 100% waterproof | waterproof | 100% waterproof |
| Security | Locks | Lock | not specified | not specified | not specified | not specified | combination lock |
| Installation | Straps and door hooks | Metal ring strap design | Tie-Down Strap | door hook straps, 10 straps | not specified | not specified | not specified |
| Vehicle Compatibility | With or without roof racks | With or without roof rack | not specified | fits cars with or without roof rack | not specified | not specified | not specified |
| Dimensions | not specified | 52 x 40 x 12-18.5 in | 9.84 x 7.09 x 13.8 in | 47.2 x 35.4 x 19.8 in | 55" L x 44.9" W x 19.5" H | 62.2 x 48.43 x 18.11 in | 72 x 48 x 20 in |
| Recommended Use | Luggage, camping gear, strollers | not specified | not specified | not specified | not specified | not specified | not specified |
| Vehicle Type | Car | Car | Car | Car | Car, SUV | Car | Car, SUV |
| Size | 20 Cubic Feet | 20 Cubic Feet | 21 Cubic Feet | 19 Cubic feet | XXL 23 Cu. Ft. | 31.5 Cu Ft | 40 Cubic Feet |
| Mount Type | Roof Mount | Roof Mount | Roof Mount | 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 | not specified | not specified | not specified | not specified | With Bag |
| Weight | not specified | not specified | 8.16 pounds | 12.4 pounds | 13.1 pounds | 17.5 pounds | 16.3 pounds |
| Color | Black | Black with Blue | Black | ['Black', 'Orange', 'Grey'] | Black | Black | Blue |
| Model | USCR03-Rooftop Cargo Carrier | rooftop cargo bag | Sailnovo5033-FR | Rooftop_Cargo_Carrier | RBM-CRB | not specified | 40cf |
Frequently asked questions
Which roof bag has the largest capacity?
The MCBD 40 cu ft soft-shell roof bag offers the maximum volume in this list. It provides 40 cubic feet of storage space, making it suitable for large vehicles and heavy loads. This model is designed for buyers who prioritize capacity over compact aerodynamics. It fits well on wider roofs and includes a storage bag for easy transport when not in use.
Is there a lockable option for roof bags?
Yes, the Asinking 20 cu ft waterproof roof bag features lockable security. This allows you to secure your gear without needing permanent roof racks. It matches the capacity of the Kingfun model but adds this protective layer. The bag measures 52 by 40 by 18.5 inches, offering a structured shape that enhances stability during travel.
Which bag is best for extra-wide loads?
The ARKSEN 31.5 cu ft extra-wide roof bag is ideal for bulky gear. It measures 48.4 inches in width, providing ample space for wide items like tents or multiple suitcases. This model is designed for drivers who need heavy-duty protection and maximum width. It mounts directly to the roof and weighs 17.5 pounds for easy handling.
What is the lightest roof bag available?
The Sailnovo 21 cu ft soft roof bag is the lightest option at 8.16 pounds. It provides 21 cubic feet of storage while remaining easy to lift and install. This model is a practical choice for cars without roof racks. Its compact folded dimensions of 7.09 by 13.8 by 9.84 inches make it simple to store in your trunk.
Does the BagMate roof bag fit SUVs?
Yes, the BagMate 23 cu ft roof bag is compatible with both cars and SUVs. It offers a universal roof mounting system that does not require existing racks. The bag provides 23 cubic feet of space and measures 55 by 44.9 by 19.5 inches. This makes it a versatile choice for standard luggage loads on various vehicle types.
Which roof bag comes in multiple colors?
The RoofPax 19 cu ft polyester roof bag is available in black, orange, and grey. This allows you to choose a color that matches your vehicle or personal preference. The bag measures 47.2 by 35.4 by 19.8 inches and weighs 12.4 pounds. It provides reliable waterproof protection for drivers who need secure storage without permanent roof installations.
Are there soft-shell options for larger vehicles?
The MCBD 40 cu ft soft-shell roof bag is designed for larger vehicles. It features a flexible soft-shell design that accommodates maximum storage volume. This model is suitable for adventurers with wide-roof cars or SUVs. It prioritizes waterproof capacity and flexible design over rigid aerodynamics, making it a practical solution for transporting bulky outdoor equipment.