Mockins 40 CuFt XXL Soft-Shell vs Mockins 30 CuFt Trailer Hitch: Spec Comparison
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This mockins 40 cuft xxl soft shell vs 30 cuft trailer hitch comparison looks at two soft-shell carriers from the same brand. Both use waterproof vinyl and include straps and locks. They differ in mounting style and storage volume. The first is a roof bag for up to 40 cubic feet. The second is a hitch bag with 30 cubic feet. You need to choose based on your vehicle setup and cargo needs.
Key differences
| Aspect | Mockins 40 cu ft XXL Soft-Shell Roof Bag | Mockins 30 cu ft Hitch Cargo Carrier Bag |
|---|---|---|
| Capacity | 40 cu ft | 30 cu ft |
| Dimensions | 72 x 48 x 20 in | 60 x 24 x 36 in |
| Mount Type | Roof (fits racks or no rack) | Trailer Hitch |
| Weight | 15.7 pounds | 20 pounds |
| Included Accessories | Car roof mat, 3 buckle straps, 3 ratchet straps, 6 door hooks, 2 trunk hooks | 6 packing cubes, 3 buckle straps |
Which one should you choose?
Choose Mockins 40 cu ft XXL Soft-Shell Roof Bag if
- You need more storage space for long trips or moving.
- Your vehicle has a roof rack or you prefer roof mounting.
- You want to protect your car paint with an included roof mat.
Choose Mockins 30 cu ft Hitch Cargo Carrier Bag if
- Your vehicle lacks roof racks or you cannot mount items on the roof.
- You prefer organized packing with included soft cubes.
- You want a compact unit that folds into its own storage cube.
Verdict: Choose the 40 cu ft roof bag if you have roof racks or need maximum volume. Pick the 30 cu ft hitch carrier if you lack roof racks or want easy hitch mounting. Both offer waterproof protection and similar warranty coverage.
Capacity and Mounting Comparison
Storage Capacity
The Mockins 40 cu ft XXL Soft-Shell Roof Bag offers 40 cubic feet of interior space. Its dimensions are 72 inches long, 48 inches wide, and 20 inches high. This large volume suits bulky items like suitcases and sleeping bags. In contrast, the Mockins 30 cu ft Trailer Hitch Cargo Carrier Bag provides 30 cubic feet of storage. It measures 60 inches long, 24 inches wide, and 36 inches high. While slightly smaller in total volume, its shape is optimized for vertical hitch mounting. You get more total space with the roof bag, making it better for large gear loads.
Mounting Style
Installation methods differ significantly between these two carriers. The roof bag mounts on top of your vehicle. It fits cars with or without crossbars, side rails, or roof racks. You can secure it using buckle straps through the vehicle or with door and trunk hooks. This flexible setup works on many vehicle types. The hitch carrier mounts to a trailer hitch receiver. It uses three heavy-duty buckle straps for attachment. This method requires a compatible hitch on your vehicle. If your car lacks a hitch, this option is not viable for you.
Included Accessories
Both packages include essential accessories for security and organization. The roof bag comes with three buckle straps, three ratchet straps, six door hooks, two trunk hooks, a car roof mat, a combo lock, and a carry bag. The hitch carrier includes three heavy-duty buckle straps, a combo lock, and six soft black packing cubes. These cubes measure 29 inches by 23 inches by 12 inches each. They feature double zippers for waterproof organization. The roof bag provides more mounting hardware for varied vehicle setups, while the hitch carrier adds organizational cubes.
Water Resistance
Both carriers are designed to keep your gear dry in various weather conditions. The roof bag is crafted from abrasion-resistant vinyl with a waterproof design. It features waterproof zippers protected by a flap and reinforced seams for durability. The hitch carrier also uses durable, abrasion-resistant vinyl. It includes a waterproof zipper under a protective flap with Velcro closures and reinforced seams. Both products use similar materials to ensure water resistance. You can trust either option to protect luggage from rain and moisture during travel.
Weight and Portability
The weight of each carrier affects how easy it is to handle. The roof bag weighs 15.7 pounds. It is lighter, which may make it easier to lift onto a roof rack or store in a garage. The hitch carrier weighs 20 pounds. It is heavier due to its construction and included packing cubes. When not in use, the hitch carrier folds compactly for storage in a packing cube. The roof bag and its accessories fit into an included carry bag. The lighter roof bag is slightly more convenient to move around.
Which mockins cargo carrier fits you
You need maximum roof storage volume
This roof bag offers 40 cubic feet of space, measuring 72 by 48 by 20 inches. It fits vehicles with or without crossbars. The large dimensions allow you to haul bulky items like suitcases and sleeping bags. It weighs 15.7 pounds and includes a roof mat to protect your vehicle surface during transport.
You prefer hitch mounting and organization
This hitch carrier provides 30 cubic feet of space with a different footprint of 60 by 24 by 36 inches. It mounts securely to a trailer hitch using three heavy-duty buckle straps. The package includes six packing cubes for better organization. It weighs 20 pounds and features a combo lock for security.
You want flexible roof installation methods
The roof bag supports four distinct installation methods. You can use buckle straps with ratchet straps through the car, or use door and trunk hooks. This flexibility allows it to work on vehicles with side rails, roof racks, or no rack at all. It includes a carry bag for compact storage when not in use.
The products compared
Mockins 40 cu ft XXL Soft-Shell Roof Bag
Best for: high-capacity storage on vehicles without 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 offers waterproof protection for your gear. The design works with or without roof racks, using straps and hooks for secure attachment. You get a complete kit with straps, hooks, and a roof mat. This carrier suits travelers needing extra space for suitcases or sleeping bags.
Pros
- Generous 40 cubic foot capacity
- Waterproof vinyl shell with sealed zippers
- Fits vehicles with or without roof racks
- Includes roof mat and carrying bag
Cons
- Soft-shell design offers less weather protection than hard cases
- Requires manual ratchet strap installation
- Heavier at 15.7 pounds than rigid alternatives
Good fit if
- You need maximum storage space for large items
- Your vehicle lacks a roof rack system
- You want a waterproof solution for gear
Skip if
- You prefer the aerodynamics of a hard shell
- You need quick one-handed locking mechanisms
- You want a rigid structure for stability
Verdict: Mockins 40 CuFt Soft-Shell Roof Bag fits those who need high-volume storage without existing roof racks. It provides a waterproof, flexible solution for bulky luggage.
Mockins 30 cu ft Hitch Cargo Carrier Bag
Best for: Hauling bulky soft gear with included cubes
- Capacity
- 30 cu ft
- Shell Type
- Abrasion-resistant vinyl soft-shell
- Water Resistance
- Waterproof
- Security
- Combination lock
- Installation
- Buckle straps
- Vehicle Compatibility
- Trailer hitch, tow hitch, truck bed
View on Amazon: Mockins 30 cu ft Hitch Cargo Carrier Bag Affiliate link
This is a 30 cubic foot soft-shell cargo bag designed for trailer hitch mounts. It measures 60 by 24 by 36 inches and weighs 20 pounds. The vinyl shell is waterproof with reinforced seams and a protected zipper. You get six included packing cubes for organization. It secures with three heavy-duty buckle straps and includes a combo lock for security.
Pros
- 30 cubic feet of soft-shell storage capacity
- Waterproof vinyl construction with reinforced seams
- Includes six 29x23x12 inch packing cubes
- Secured with three heavy-duty buckle straps
- Features a combo lock for anti-theft protection
Cons
- Soft shell lacks the rigid protection of hard cases
- Requires manual buckling for installation and removal
- No integrated rigid frame for structural stability
Good fit if
- You need flexible storage for irregular items like tents
- You want included packing cubes for better organization
- You prefer a waterproof bag over a hard case
Skip if
- You require a rigid hard-shell for maximum impact protection
- You need quick-release hardware for frequent removal
- You want a smaller footprint than 60 inches long
Verdict: Mockins 30 CuFt Hitch Cargo Bag is a practical soft-shell option for hauling bulky gear like sleeping bags. It fits travelers who prioritize waterproofing and included organization cubes over rigid structural protection.
Specifications side by side
| Spec | Mockins 40 cu ft XXL Soft-Shell Roof Bag | Mockins 30 cu ft Hitch Cargo Carrier Bag |
|---|---|---|
| Capacity | 40 cu ft | 30 cu ft |
| Shell Type | Soft shell (vinyl) | Abrasion-resistant vinyl soft-shell |
| Water Resistance | Waterproof | Waterproof |
| Security | Combo lock | Combination lock |
| Installation | Buckle/ratchet straps, door hooks | Buckle straps |
| Vehicle Compatibility | With or without roof rack | Trailer hitch, tow hitch, truck bed |
| Dimensions | 72 x 48 x 20 in | 60 x 24 x 36 in |
| Recommended Use | Suitcases, sleeping bags | Suitcases, tents, sleeping bags |
| Vehicle Type | Car, SUV, Truck, Van | not stated |
| Mount Type | Roof Mount | Hitch Mount |
| Lockable | not stated | Lockable |
| Includes Bag | not stated | With Bag |
| Weight | 15.7 pounds | 20 pounds |
| Size | 40 Cubic Feet | 30 Cu Ft - Black/Orange |
| Color | Black/Orange | Black/Orange |
| Model | MA-RB-40BLK-89-V2 | MA-HB-30OR-60X24-PC-10 |
Frequently asked questions
Which carrier is lighter to carry?
The roof bag is lighter. It weighs 15.7 pounds. The hitch carrier weighs 20 pounds. You will find the roof bag easier to lift onto your vehicle. The hitch bag is heavier, which may matter when loading it into your trunk or garage.
Does the roof bag need crossbars?
No, it does not. The Mockins 40 cu ft XXL Soft-Shell Roof Bag is designed for vehicles with or without roof racks. It uses straps to secure directly to the vehicle roof. This makes it a flexible choice if your car lacks factory rails.
What is the width difference between the two?
The roof bag is significantly wider. It measures 48 inches across. The hitch carrier is 24 inches wide. The roof bag covers more surface area. The hitch bag is narrower, which may help with clearance in tight parking spaces or narrow driveways.
Which one is better for sleeping bags?
The hitch carrier is a strong option. Its verdict notes it is practical for hauling bulky soft gear like sleeping bags. It includes organization cubes to keep items tidy. The roof bag also holds bulky items, but the hitch model is specifically highlighted for this use.
How tall is the hitch carrier?
The hitch carrier is 36 inches high. The roof bag is 20 inches high. The hitch bag stands taller. This vertical profile might affect visibility or clearance under low garage doors. The roof bag sits lower and flatter on the roof.
Are both carriers the same color?
Yes, they share the same color scheme. Both the 40 cu ft roof bag and the 30 cu ft hitch carrier are black and orange. This consistent look helps them match your vehicle style. The roof bag model is MA-RB-40BLK-89-V2. The hitch bag is MA-HB-30OR-60X24-PC-10.
Can I use the hitch carrier on my roof?
No, it is designed for a hitch mount. The product attributes specify it is a hitch mount carrier. It requires a trailer hitch receiver on your vehicle. The roof bag is the correct choice for roof mounting. Do not attempt to strap the hitch bag to your roof.
Which has more interior volume?
The roof bag has more volume. It offers 40 cubic feet of space. The hitch carrier provides 30 cubic feet. The roof bag holds 10 more cubic feet. This extra space is useful if you are transporting large suitcases or bulky outdoor equipment.

