Mockins 40 CuFt XXL Soft-Shell vs Mockins 40 CuFt XXL Car (2026): Key Differences
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You are comparing the mockins 40 cuft xxl soft shell vs 40 cuft xxl car roof bags. Both offer 40 cubic feet of storage in a 72 by 48 by 20 inch footprint. They share waterproof construction and versatile mounting options for cars with or without racks. The main difference lies in the shell material and weight. One uses 840D vinyl for added abrasion resistance, while the other features a standard soft-shell design. Both include comprehensive accessory kits for secure transport.
Key differences
| Aspect | Mockins 40 cu ft XXL Roof Bag | Mockins 40 cu ft XXL Soft-Shell Roof Bag |
|---|---|---|
| Shell Material | 840D vinyl | Standard soft-shell vinyl |
| Weight | 16.5 pounds | 15.7 pounds |
| Color | Black | Black/Orange |
Which one should you choose?
Choose Mockins 40 cu ft XXL Roof Bag if
- You want extra abrasion resistance from 840D vinyl construction
- You prefer a classic all-black appearance for your vehicle
- You need a slightly heavier, potentially more durable shell
Choose Mockins 40 cu ft XXL Soft-Shell Roof Bag if
- You want the lighter option at 15.7 pounds
- You prefer high-visibility Black/Orange coloring for safety
- You want a standard soft-shell design without specific denier rating
Verdict: Choose the 840D vinyl model if you prioritize material toughness and a stealthy black look. Select the standard soft-shell version if you want to save nearly an pound and prefer high-visibility orange accents. Both provide identical capacity and mounting flexibility for your roof storage needs.
Shell Material and Weight Comparison
Shell material
Product A uses 840D vinyl for its shell. This specific denier rating indicates a heavy-duty, abrasion-resistant fabric designed to withstand road debris and harsh weather. Product B lists its shell simply as soft-shell vinyl without specifying the denier count. While both are described as rugged and waterproof, the explicit 840D specification in Product A suggests a potentially higher level of tear resistance and durability against friction. If you prioritize verified material thickness for long-term rugged use, the detailed specification in Product A provides clearer assurance than the generic description in Product B.
Weight
Product A weighs 16.5 pounds. Product B weighs 15.7 pounds. The difference is 0.8 pounds, which is roughly 12.8 ounces. This small variance is unlikely to impact vehicle roof load limits significantly, as both are well below typical limits. However, for users concerned with minimizing added weight on their roof rails or for those who install and remove the bag frequently, the lighter Product B offers a slight advantage. The reduced weight makes handling the bag slightly easier during setup and storage without sacrificing the 40 cubic feet of capacity.
Capacity
Both products offer 40 cubic feet of storage space. The external dimensions are identical for both items: 72 inches in length, 48 inches in width, and 20 inches in height. This means you get the exact same volume for packing suitcases, tents, or moving boxes. Neither product provides more or less space than the other. The footprint on your roof is also the same, ensuring they fit similarly on most vehicle roofs regardless of crossbar spacing. Since capacity is identical, this aspect results in a complete tie between the two options.
Color options
Product A is listed in Black. Product B is listed in Black/Orange. If you prefer a high-visibility option for safety or easier identification in a parking lot, the two-tone color of Product B may be preferable. The orange accents can make the bag more noticeable to others. Product A offers a solid black finish, which may blend better with darker vehicles or appeal to those who prefer a stealthier, uniform look. Your choice here depends entirely on aesthetic preference and whether visibility is a priority for your specific use case.
Model specificity
Product A has the model number MA-RB-40BLK-72X48X20-89. Product B has the model number MA-RB-40BLK-89-V2. The suffix V2 in Product B suggests it may be a revised version or a different iteration of the product line. Product A’s model number includes specific dimensions, which can be helpful for precise part matching or accessory compatibility. If you are looking for a specific version that has been on the market longer or has a distinct manufacturing batch, the explicit dimensional model number in Product A might offer better traceability. Product B’s V2 designation implies an update, but the exact nature of that update is not detailed in the specs.
Which Mockins Roof Bag Fits You
Buyers seeking maximum shell durability
Product A specifies an 840D vinyl shell. This denier rating confirms a heavy-duty fabric construction designed to resist abrasion from road debris and harsh weather conditions better than standard vinyl. If you prioritize long-term wear resistance and a rugged exterior for your cargo carrier, this specific material specification makes it the more robust choice for your vehicle.
Buyers prioritizing lighter weight for handling
Product B weighs 15.7 pounds, which is lighter than Product A at 16.5 pounds. This slight weight difference may make it easier to lift onto your roof and secure during installation. If you frequently install and remove the bag, or prefer a lighter overall package for transport and storage, the reduced mass of this model offers a practical advantage.
Buyers wanting color variety options
Product B is available in a Black/Orange color scheme, offering a visual distinction from the standard black option found in Product A. If you prefer a two-tone aesthetic or want higher visibility for your roof cargo carrier, this color variation provides a stylistic difference. Check the specific variation options available to confirm this color is currently in stock for your order.
The products compared
Mockins 40 cu ft XXL Roof Bag
Best for: rack-free waterproof cargo expansion
- Capacity
- 40 cu ft
- Shell Type
- Soft-shell 840D vinyl
- Water Resistance
- Waterproof
- Security
- Combo lock
- Installation
- Buckle and ratchet straps
- Vehicle Compatibility
- With or without roof rack
View on Amazon: Mockins 40 cu ft XXL Roof Bag Affiliate link
This Mockins soft-shell roof bag offers 40 cubic feet of storage in a 72 by 48 by 20 inch footprint. It uses 840D vinyl for waterproof protection and weighs 16.5 pounds. The design works with or without roof racks, using hooks and straps for attachment. It includes a protective car roof mat and a carry bag for storage. This option suits those needing flexible mounting on vehicles without fixed crossbars.
Pros
- 40 cubic feet capacity with 72 by 48 by 20 inch dimensions
- 840D vinyl shell provides waterproof protection
- Includes 3 buckle straps, 3 ratchet straps, and hooks for rack-free mounting
- Comes with a car roof mat to protect vehicle paint
- Folds into an included carry bag for compact storage
Cons
- Soft-shell construction offers less aerodynamic efficiency than hard shells
- Requires manual tightening of multiple straps and buckles
- Heavier at 16.5 pounds compared to lighter soft-shell alternatives
Good fit if
- You need to mount cargo on a vehicle without roof racks
- You want a waterproof bag that expands to 40 cubic feet
- You prefer a soft bag that folds flat for off-season storage
Skip if
- You require a rigid hard-shell carrier for maximum aerodynamics
- You want a bag under 15 pounds for easier handling
- You prefer a product with a shorter warranty than 10 years
Verdict: Mockins 40 CuFt Soft-Shell Roof Bag provides ample 40 cubic feet of waterproof storage with versatile rack-free mounting options. It is a practical solution for SUVs or cars lacking fixed crossbars, provided you do not mind the extra weight and manual strap setup.
Mockins 40 cu ft XXL Soft-Shell Roof Bag
Best for: transporting bulky gear without roof racks
- Capacity
- 40 cu ft
- Shell Type
- Soft shell (vinyl)
- Water Resistance
- Waterproof
- Security
- Combo lock
- Installation
- Buckle/ratchet straps, door hooks
- Vehicle Compatibility
- With or without roof rack
View on Amazon: Mockins 40 cu ft XXL Soft-Shell Roof Bag Affiliate link
This 40 cubic foot soft-shell roof bag measures 72 by 48 by 20 inches. It weighs 15.7 pounds and uses 840D abrasion-resistant vinyl. The design works with or without crossbars. You can secure it using buckle straps, ratchet straps, or door hooks. It includes a roof mat and a carry bag. This bag suits travelers needing extra space for suitcases or sleeping bags.
Pros
- 40 cubic feet of storage capacity
- Waterproof zippers and reinforced seams
- Fits vehicles without roof racks
- Includes roof mat and carry bag
Cons
- Soft-shell design offers less aerodynamic efficiency
- 15.7 pounds is heavier than hard-shell alternatives
- No integrated locking mechanism for the shell
Good fit if
- You need to transport bulky items like sleeping bags
- Your vehicle lacks a permanent roof rack system
- You want a waterproof solution for all-weather travel
Skip if
- You prioritize fuel efficiency over cargo volume
- You require a rigid structure for high-speed highway driving
- You prefer a lightweight carrier under 10 pounds
Verdict: Mockins 40 CuFt XXL Soft-Shell Roof Bag provides substantial volume for gear that does not fit inside your car. It is a practical option for off-road trips or moving, but its soft construction makes it less ideal for long highway journeys where aerodynamics matter.
Specifications side by side
| Spec | Mockins 40 cu ft XXL Roof Bag | Mockins 40 cu ft XXL Soft-Shell Roof Bag |
|---|---|---|
| Capacity | 40 cu ft | 40 cu ft |
| Shell Type | Soft-shell 840D vinyl | Soft shell (vinyl) |
| Water Resistance | Waterproof | Waterproof |
| Security | Combo lock | Combo lock |
| Installation | Buckle and ratchet straps | Buckle/ratchet straps, door hooks |
| Vehicle Compatibility | With or without roof rack | With or without roof rack |
| Dimensions | 72 x 48 x 20 in | 72 x 48 x 20 in |
| Recommended Use | Suitcases, sleeping bags | Suitcases, sleeping bags |
| Vehicle Type | Car, SUV, Truck, Van | Car, SUV, Truck, Van |
| Mount Type | Roof Mount | Roof Mount |
| Weight | 16.5 pounds | 15.7 pounds |
| Size | 40 Cubic Feet | 40 Cubic Feet |
| Color | Black | Black/Orange |
| Model | MA-RB-40BLK-72X48X20-89 | MA-RB-40BLK-89-V2 |
Frequently asked questions
Which Mockins 40 cu ft bag weighs less?
The Mockins 40 cu ft XXL Soft-Shell Roof Bag is lighter. It weighs 15.7 pounds, while the other 40 cu ft model weighs 16.5 pounds. The difference is 0.8 pounds. This makes the lighter bag slightly easier to handle when lifting it onto your vehicle roof for installation.
Do both roof bags have the same dimensions?
Yes, both bags share identical external dimensions. Each measures 72 inches in length, 48 inches in width, and 20 inches in height. Both also provide 40 cubic feet of storage volume. You can use either bag on vehicles with similar roof spaces without worrying about fitment issues.
What is the difference in color between the two models?
The primary color difference lies in the accent colors. One model is entirely black. The other model features a black and orange color scheme. Both use black as the main base color, but the orange accents on the second model provide higher visibility.
Are both bags suitable for cars without roof racks?
Yes, both are designed for rack-free mounting. The first model is noted for versatile rack-free options on SUVs or cars lacking fixed crossbars. The second model is also described as suitable for transporting gear without roof racks. You can secure either bag using the included strap systems.
Which model is better for off-road trips?
The Mockins 40 cu ft XXL Soft-Shell Roof Bag is highlighted as practical for off-road trips. Its soft construction handles bulky gear well in rugged conditions. The other model is also versatile but is specifically noted for rack-free waterproof expansion rather than off-road specialization.
Do these bags have the same shell type?
Yes, both bags are classified as soft shell roof bags. This means they use flexible, fabric-based material rather than hard plastic or aluminum. Both are constructed from vinyl, providing waterproof protection while remaining lightweight and easy to fold for storage when not in use.