6 Best Alternatives to the KJTYSDM Rooftop Cargo Carrier Bag (2026)
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The KJTYSDM rooftop cargo carrier bag is a lightweight soft shell option designed for vehicles without roof racks. It uses door hooks and straps to secure 41 by 31 by 17 inch loads. You might look for kjtysdm rooftop cargo carrier alternatives if you need more cubic feet, a different shell material, or a specific color. The original bag weighs only 2.2 pounds and includes a combination lock, but its fixed height and soft fabric may not suit every road trip need.
This list features 6 alternatives that share key specifications with the KJTYSDM model. All options are roof mount soft bags compatible with cars lacking cross bars. We selected these products because their dimensions, capacities, and mounting methods overlap with the original carrier. You will find choices ranging from 19 to 31.5 cubic feet. Some include waterproof zippers, while others offer wider profiles for full-size vehicles. Each alternative provides a practical way to expand your cargo space using similar installation techniques.
Our top pick: KJTYSDM Roof Bag 41x31x17 in.
How these bags compare to KJTYSDM
Sailnovo 21 cu ft Soft Roof Bag
The Sailnovo 21 cu ft bag offers significantly more volume than the 41 by 31 by 17 inch KJTYSDM unit. It weighs 8.16 pounds, which is heavier than the 2.2 pound KJTYSDM bag. This extra weight comes with 21 cubic feet of waterproof storage, ideal for cars without roof racks. You get ample space for large loads, but you sacrifice the ultra-lightweight portability of the KJTYSDM option. Choose this if you need maximum capacity and do not mind carrying a heavier bag.
RoofPax 19 cu ft Polyester Roof Bag
The RoofPax 19 cu ft bag is larger in physical dimensions, measuring 47.2 by 35.4 by 19.8 inches. It weighs 12.4 pounds, making it much heavier than the 2.2 pound KJTYSDM bag. It provides 19 cubic feet of capacity, which is less than the Sailnovo but still substantial. The door hook straps offer secure mounting for vehicles without racks. Pick this if you prefer a dedicated polyester build and do not need the absolute lightest weight option available.
Asinking 20 cu ft Waterproof Roof Bag
The Asinking 20 cu ft bag measures 52 by 40 by 18.5 inches, providing a larger footprint than the KJTYSDM bag. It is lockable, adding security that the KJTYSDM bag also offers. This option prioritizes weather protection and rack compatibility for standard loads. It gives you more volume and a wider base, but you lose the ultra-light 2.2 pound profile. Select this if you want solid waterproofing and extra space without the bulk of the largest bags on the list.
BagMate 23 cu ft Roof Bag – 840D PVC
The BagMate 23 cu ft bag is designed for large luggage loads on vehicles without roof racks. It measures 55 by 44.9 by 19.5 inches and weighs 13.1 pounds. This is significantly heavier than the 2.2 pound KJTYSDM bag. It offers 23 cubic feet of space, making it ideal for families needing ample cargo room. The 840D PVC material provides durability. Choose this if you need maximum capacity for road trips and can manage the heavier weight and larger dimensions.
Kingfun 20 cu ft Roof Bag
The Kingfun 20 cu ft bag provides a flexible, waterproof solution for vehicles lacking roof racks. It matches the KJTYSDM in mount type but offers more volume. This option is practical for families moving bulky items like strollers or camping gear. It keeps the interior cabin clear while providing 20 cubic feet of storage. You gain capacity and waterproofing, but you likely lose the ultra-lightweight nature of the 2.2 pound KJTYSDM bag. Pick this for steady, high-capacity transport.
ARKSEN 31.5 Cu Ft Extra-Wide Roof Bag
The ARKSEN 31.5 Cu Ft bag is the largest option, measuring 62.2 by 48.4 by 18.1 inches. It weighs 17.5 pounds, which is far heavier than the 2.2 pound KJTYSDM bag. It provides exceptional width and capacity for full-size vehicles. This is the practical choice for hauling multiple suitcases or bulky outdoor equipment. You gain massive storage space but sacrifice the compact, lightweight profile. Choose this if you need maximum volume and have a vehicle that can support the larger footprint.
Quick picks
Our 7 picks
KJTYSDM Roof Bag 41x31x17 in
Best for: Ford Expedition owners without roof racks
- Shell Type
- Soft shell
- Water Resistance
- Weather resistant
- Security
- Combination lock
- Installation
- Straps, buckles, door hooks
- Dimensions
- 41 x 31 x 17 in
- Recommended Use
- Luggage, blankets, tents, sleeping bags
This soft shell roof bag measures 41 by 31 by 17 inches. It weighs just 2.2 pounds and uses straps, buckles, and door hooks for installation. The weather resistant fabric protects luggage from rain and sun. It includes a combination lock for security. You get extra storage without modifying your vehicle. It fits most cars, SUVs, and trucks with or without racks.
Pros
- Soft shell design weighs only 2.2 pounds
- Includes door hooks for vehicles without roof racks
- Weather resistant coated fabric for outdoor use
- Combination lock included for security
Cons
- Soft shell offers less protection than hard cases
- Weather resistant, not fully waterproof
- Limited to one height option of 17 inches
Good fit if
- You need extra storage for a Ford Expedition
- You want a lightweight bag that folds small
- Your vehicle lacks roof rails or cross bars
Skip if
- You require a rigid hard shell for heavy impact protection
- You need a fully waterproof seal for heavy rain
- You prefer a taller bag for more vertical space
Verdict: KJTYSDM Rooftop Cargo Carrier Bag is a lightweight, rack-free solution for Ford Expedition owners who need flexible storage. It suits travelers who prioritize easy installation and low weight over maximum weather sealing.
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
The Sailnovo 21 cubic feet roof bag offers a soft shell design for flexible storage. It weighs 8.16 pounds and measures 9.84 x 7.09 x 13.8 inches in its standard configuration. The bag is waterproof and uses tie-down straps for installation. It fits cars without roof racks. You can choose between 15 or 21 cubic feet sizes. This option suits those needing extra space without hard rack hardware.
Pros
- 21 cubic feet capacity
- Waterproof construction
- Soft shell design
- Tie-down strap installation
Cons
- Heavier at 8.16 pounds
- Requires tie-down straps only
- No hard shell protection
Good fit if
- You need 21 cubic feet of space
- You want a waterproof soft bag
- You have a car without roof racks
Skip if
- You need hard shell protection
- You prefer integrated rack mounting
- You require under 8 pounds weight
Verdict: Sailnovo 21 Cu Ft Rooftop Cargo Bag provides ample 21 cubic feet of waterproof storage for cars lacking roof racks. It is a solid choice for buyers prioritizing capacity and soft shell flexibility over hard case durability.
RoofPax 19 cu ft Polyester Roof Bag
Best for: vehicles without roof racks
- 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 cargo bag offers 19 cubic feet of storage in a 47.2 x 35.4 x 19.8 inch footprint. It uses heavy-duty polyester with dual zippers and double-seam technology for waterproof protection. The bag installs via four patented door hook straps or standard roof racks, fitting vehicles with or without existing racks. It weighs 12.4 pounds and includes ten additional securing straps.
Pros
- 19 cubic feet capacity
- Patented 4-door hook straps for rack-less installation
- 100% waterproof polyester with dual zippers
- Fits vehicles with or without roof racks
Cons
- 19 cubic feet capacity is smaller than the 21 to 30 cubic feet options on this list
- Weighs 12.4 pounds, adding more weight than lighter soft bags
- Polyester shell may be less abrasion-resistant than PVC materials used by some competitors
Good fit if
- You need to mount cargo on a vehicle without roof racks
- You prioritize waterproof polyester over PVC materials
- You require a compact bag for smaller SUVs or sedans
Skip if
- You need more than 19 cubic feet of storage space
- You prefer a rigid hard-shell carrier for maximum protection
- You want the largest available capacity on the market
Verdict: RoofPax 19 CuFt Waterproof Cargo Bag is a secure option for drivers without roof racks, thanks to its door hook straps, though its 19 cubic feet capacity is smaller than other bags on this list.
Asinking 20 cu ft Waterproof Roof Bag
Best for: Waterproof storage on vehicles without 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
The Asinking roof bag offers 20 cubic feet of storage in a 52 by 40 inch soft shell. It uses 900D PVC tarpaulin with triple-reinforced seams for full waterproof protection. The design fits vehicles with or without roof racks. You get a lockable closure and metal ring straps for secure mounting. This bag suits drivers needing weather-resistant gear transport without hard box bulk.
Pros
- 20 cubic feet capacity
- 100% waterproof 900D PVC tarpaulin
- Lockable closure for security
- Fits vehicles with or without roof racks
- Metal ring strap design
Cons
- 20 cubic feet is smaller than the 31.5 cubic feet ARKSEN option
- Soft shell offers less rigid protection than hard cases
- Height adjusts between 12 and 18.5 inches but max is lower than some rivals
Good fit if
- You need a waterproof bag for vehicles without roof racks
- You want a lockable soft carrier for road trips
- You prefer a lower profile for fuel efficiency
Skip if
- You require more than 20 cubic feet of space
- You need a rigid hard shell for maximum impact protection
- You only have vehicles with side rails and want a specialized fit
Verdict: Asinking 20 cu ft Waterproof Roof Bag provides solid waterproofing and rack compatibility for standard loads. It fits buyers who prioritize weather protection and easy installation over maximum volume.
BagMate 23 cu ft Roof Bag – 840D PVC
Best for: Large luggage loads on vehicles without roof 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 offers 23 cubic feet of storage in a 55 by 44.9 inch footprint. It uses 840D PVC with heat-welded seams for waterproofing. The design includes a protective mat and door hooks for rack-free installation. This carrier suits SUVs and cars needing high capacity without a roof rack. It weighs 13.1 pounds and folds into a storage bag.
Pros
- 23 cubic feet capacity holds up to 8 medium suitcases
- 840D PVC shell with heat-welded seams for waterproofing
- Universal installation uses door hooks without a roof rack
- Includes non-slip protective mat to prevent paint scratches
- Folds into a compact storage bag for off-season use
Cons
- 44.9 inch width may exceed some narrow SUV roof rails
- Door hook installation requires careful alignment with door seals
- No mention of aerodynamic drag reduction features beyond testing
Good fit if
- You need maximum storage volume for large luggage loads
- You drive an SUV or sedan without existing roof racks
- You want a waterproof shell built from heavy-duty PVC
Skip if
- You require a rigid carrier for high-speed highway stability
- You have narrow roof rails that cannot support 44.9 inches
- You prefer a lightweight bag under 10 pounds
Verdict: BagMate 23 Cu Ft Roof Bag fits families needing ample cargo space for road trips. It works well for vehicles lacking roof racks, provided you can manage the door hook setup.
Kingfun 20 cu ft Roof Bag
Best for: bare roof vehicles needing flexible storage
- 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
The Kingfun rooftop cargo carrier offers 20 cubic feet of storage in a soft, waterproof design. It uses triple-strength material and a covered zipper to keep gear dry. You can mount it on bare roofs using included straps and door hooks, or on existing racks. The bag folds for compact storage. It suits travelers needing flexible roof space without permanent rack hardware.
Pros
- 20 cubic feet capacity
- Waterproof triple-strength shell
- Fits bare roofs or racks
- Folds for compact storage
Cons
- Soft shell offers less impact protection than hard cases
- No integrated locking mechanism mentioned
- Requires manual strap tightening for security
Good fit if
- You need roof storage on a vehicle without racks
- You want to keep gear dry in rain or snow
- You need to fold the bag for small car trunk storage
Skip if
- You require a hard shell for maximum impact resistance
- You prefer keyless or integrated locking security
- You need more than 20 cubic feet of space
Verdict: Kingfun 20 Cu Ft Rooftop Cargo Bag provides a flexible, waterproof solution for vehicles lacking roof racks. It is a practical choice for families moving bulky items like strollers or camping gear while keeping the interior cabin clear.
ARKSEN 31.5 Cu Ft Extra-Wide Roof Bag
Best for: Full-size vehicles needing maximum width
- 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
This ARKSEN rooftop cargo carrier 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 package includes an anti-slip mat, six door hook straps, and ten reinforced straps for secure mounting. It weighs 17.5 pounds and fits full-size vehicles. This bag suits those needing maximum width and high capacity for bulky travel gear.
Pros
- 31.5 cubic feet capacity holds 6-9 suitcases
- Extra-wide 48.43-inch design fits full-size racks
- Waterproof zippers protected by a flap
- 500D PVC tarpaulin shell with UV inhibitors
- Includes anti-slip mat and door hook straps
Cons
- 17.5-pound weight adds roof load
- No integrated locking mechanism mentioned
- Manual assembly required for straps
Good fit if
- You have a full-size vehicle with wide roof racks
- You need to transport bulky items like tents
- You want extra-wide coverage for stability
Skip if
- You drive a compact car with narrow racks
- You prefer a rigid hard-shell carrier
- You need integrated key locks for security
Verdict: ARKSEN 31.5 Cu Ft Extra-Wide Roof Bag provides exceptional width and capacity for large vehicles. It is the practical choice for families hauling multiple suitcases or bulky outdoor equipment.
Specifications side by side
| Spec | KJTYSDM Roof Bag 41x31x17 in | Sailnovo 21 cu ft Soft Roof Bag | RoofPax 19 cu ft Polyester Roof Bag | Asinking 20 cu ft Waterproof Roof Bag | BagMate 23 cu ft Roof Bag – 840D PVC | Kingfun 20 cu ft Roof Bag | ARKSEN 31.5 Cu Ft Extra-Wide Roof Bag |
|---|---|---|---|---|---|---|---|
| Capacity | not specified | 21 cubic feet | 19 Cubic feet | 20 cu ft | 23 cu ft | 20 cu ft | 31.5 cubic feet |
| Shell Type | Soft shell | Soft Shell | polyester | 900D PVC tarpaulin | 840D PVC | Soft-shell | 500D PVC tarpaulin |
| Water Resistance | Weather resistant | Waterproof | 100% waterproof | 100% waterproof | 100% waterproof | Waterproof | waterproof |
| Security | Combination lock | not specified | not specified | Lock | not specified | Locks | not specified |
| Installation | Straps, buckles, door hooks | Tie-Down Strap | door hook straps, 10 straps | Metal ring strap design | not specified | Straps and door hooks | not specified |
| Vehicle Compatibility | not specified | not specified | fits cars with or without roof rack | With or without roof rack | not specified | With or without roof racks | not specified |
| Dimensions | 41 x 31 x 17 in | 9.84 x 7.09 x 13.8 in | 47.2 x 35.4 x 19.8 in | 52 x 40 x 12-18.5 in | 55" L x 44.9" W x 19.5" H | not specified | 62.2 x 48.43 x 18.11 in |
| Recommended Use | Luggage, blankets, tents, sleeping bags | not specified | not specified | not specified | not specified | Luggage, camping gear, strollers | not specified |
| Vehicle Type | Car | Car | Car | Car | Car, SUV | Car | Car |
| Size | A 105×80×43 cm (41"×31"×17") | 21 Cubic Feet | 19 Cubic feet | 20 Cubic Feet | XXL 23 Cu. Ft. | 20 Cubic Feet | 31.5 Cu Ft |
| Mount Type | Roof Mount | Roof Mount | Roof Mount | Roof Mount | Roof Mount | Roof Mount | Roof Mount |
| Lockable | not specified | not specified | not specified | Lockable | not specified | not specified | not specified |
| Weight | 2.2 pounds | 8.16 pounds | 12.4 pounds | not specified | 13.1 pounds | not specified | 17.5 pounds |
| Color | Normal | Black | ['Black', 'Orange', 'Grey'] | Black with Blue | Black | Black | Black |
| Model | KJTYSDM-13860113-01 | Sailnovo5033-FR | Rooftop_Cargo_Carrier | rooftop cargo bag | RBM-CRB | USCR03-Rooftop Cargo Carrier | not specified |
Frequently asked questions
Which rooftop cargo bag is the lightest option available?
The KJTYSDM Roof Bag is the lightest choice on this list. It weighs only 2.2 pounds. This low weight makes it easy to lift onto your vehicle. It measures 41 by 31 by 17 inches. Other bags like the Sailnovo weigh over 8 pounds. The KJTYSDM is ideal if you prioritize minimal weight over maximum storage volume.
What is the largest capacity rooftop bag on this list?
The ARKSEN 31.5 Cu Ft Extra-Wide Roof Bag offers the most storage space. It provides 31.5 cubic feet of volume. This is significantly larger than the 19 cubic feet of the RoofPax. The ARKSEN measures 62.2 inches long. It is best for families needing to haul bulky outdoor equipment or multiple large suitcases.
Are any of these bags lockable for security?
Yes, the Asinking 20 cu ft Waterproof Roof Bag is lockable. This feature adds a layer of security for your stored items. Most other bags on this list do not have this specific attribute listed. The Asinking also measures 52 inches long. It is a practical choice if you need to secure your gear while traveling.
Which bag is best for SUVs with large luggage loads?
The BagMate 23 cu ft Roof Bag is designed for SUVs. It offers 23 cubic feet of space. This capacity handles large luggage loads effectively. It weighs 13.1 pounds and measures 55 inches long. The BagMate is suitable for vehicles lacking roof racks. It provides ample room for families on road trips.
Do these bags work on vehicles without roof racks?
Yes, all bags on this list are designed for vehicles without roof racks. They use door hooks and straps for mounting. The KJTYSDM and Sailnovo are specifically noted for this use case. The RoofPax also uses door hook straps for security. This design allows you to add storage to cars that lack factory roof rails.
Which bag offers the widest dimensions for full-size vehicles?
The ARKSEN 31.5 Cu Ft Extra-Wide Roof Bag has the widest dimensions. It measures 48.4 inches wide. This width accommodates full-size vehicles better than narrower options. The BagMate is also wide at 44.9 inches. These extra-wide bags are practical for hauling multiple suitcases side by side on the roof.
How does the weight of the Sailnovo compare to the KJTYSDM?
The Sailnovo 21 cu ft bag is significantly heavier than the KJTYSDM. The Sailnovo weighs 8.16 pounds. The KJTYSDM weighs only 2.2 pounds. This difference is over 6 pounds. The extra weight of the Sailnovo comes with 21 cubic feet of capacity. The KJTYSDM offers less space but is much easier to handle.
Is there a waterproof option available in these alternatives?
Yes, the Asinking 20 cu ft Waterproof Roof Bag is explicitly waterproof. It provides solid weather protection for your cargo. The Sailnovo and Kingfun are also described as waterproof. These bags keep your items dry during rain. The Asinking is a strong choice if you prioritize weather sealing over maximum volume.