Mockins 40 CuFt XXL Soft-Shell or Mockins 30 Cu.Ft. All-Weather Rooftop? Which Mockins Model to Buy
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You are deciding between the mockins 40 cuft xxl soft shell vs 30 cu ft all weather rooftop. Both are soft-shell vinyl cargo bags designed for all-weather protection. They share the same 20-inch height and waterproof construction. The main difference is capacity. The 30 cu ft model offers 30 cubic feet of storage. The 40 cu ft XXL model provides 40 cubic feet. Both fit vehicles with or without roof racks. This guide compares their dimensions and included accessories to help you choose.
Key differences
| Aspect | Mockins 30 cu ft Soft-Shell Vinyl Roof Bag | Mockins 40 cu ft XXL Soft-Shell Roof Bag |
|---|---|---|
| Capacity | 30 cu ft | 40 cu ft |
| Dimensions | 60 x 43 x 20 in | 72 x 48 x 20 in |
| Weight | 15.5 pounds | 15.7 pounds |
| Included Straps | 4 buckle, 2 ratchet | 3 buckle, 3 ratchet |
| Hooks | 4 door hooks | 6 door, 2 trunk |
Which one should you choose?
Choose Mockins 30 cu ft Soft-Shell Vinyl Roof Bag if
- You need a bag that fits smaller roofs or tighter spaces.
- You prefer more buckle straps for side-rail mounting.
- You want the lighter option for easier handling.
Choose Mockins 40 cu ft XXL Soft-Shell Roof Bag if
- You require maximum cargo space for large trips.
- You need extra hooks for secure mounting without racks.
- You prefer ratchet straps for tighter tensioning.
Verdict: Choose the 30 cu ft model if your vehicle is smaller or you prioritize a lighter weight. Select the 40 cu ft XXL model if you need extra volume and more mounting hardware for secure installation. Both offer identical waterproof protection and shell durability.
Capacity and Dimensions Comparison
Storage capacity
The Mockins 40 CuFt XXL Soft-Shell offers 40 cubic feet of storage, while the Mockins 30 Cu.Ft. All-Weather provides 30 cubic feet. This ten-cubic-foot difference matters significantly if you carry large items like multiple suitcases or bulky camping gear. The larger model allows for more volume, making it better for extended trips or moving. The smaller model suits those with less cargo or tighter roof constraints. You should choose based on your typical load size to avoid overpacking or wasting space.
External dimensions
The 40 CuFt model measures 72 inches long by 48 inches wide. The 30 CuFt model is 60 inches long by 43 inches wide. Both share a 20-inch height. The larger footprint of the 40 CuFt bag requires a wider vehicle roof or more substantial crossbars for secure mounting. The 30 CuFt bag is more compact, potentially fitting better on smaller SUVs or sedans with limited roof width. Consider your vehicle's roof dimensions before choosing to ensure the bag does not overhang excessively.
Included accessories
The 40 CuFt model includes three buckle straps, three ratchet straps, six door hooks, and two trunk hooks. The 30 CuFt model comes with four buckle straps, two ratchet straps, and four door hooks. The larger bag provides more ratchet straps and additional trunk hooks, offering more anchoring points for stability. The smaller bag has more buckle straps but fewer ratchet straps. Both include a roof mat and a carry bag. The extra hooks and straps on the 40 CuFt model may provide better security for heavier loads.
Weight
The Mockins 40 CuFt XXL Soft-Shell weighs 15.7 pounds. The Mockins 30 Cu.Ft. All-Weather weighs 15.5 pounds. The difference is minimal, only 0.2 pounds. This negligible weight variance will not significantly impact your vehicle's roof load limit or handling. Both bags are constructed from durable vinyl, resulting in similar heft. You can treat the weight as equivalent when calculating your total roof load, focusing instead on the cargo weight you intend to carry inside the bags.
Security features
Both models include a combination lock for securing the zipper area. This feature helps prevent theft of your cargo during travel. Neither model lists additional electronic security features or unique locking mechanisms beyond the standard combination lock. The presence of a lock on both units ensures a baseline level of security for your belongings. You should always use the provided lock and consider using additional cable locks through the ratchet straps for extra peace of mind when leaving your vehicle unattended.
Which Mockins Roof Bag Fits You
You need extra space for large loads
The 40 CuFt XXL model provides 40 cubic feet of storage, which is ten cubic feet more than the 30 Cu.Ft. version. Its 72-inch length and 48-inch width accommodate bulkier items like multiple suitcases or large camping gear. If you frequently transport oversized equipment, this larger footprint offers the necessary capacity without exceeding standard roof width limits.
You want a compact fit for smaller cars
The 30 Cu.Ft. All-Weather model measures 60 inches long and 43 inches wide. This smaller footprint is easier to manage on compact vehicles or when you only need to carry a few medium-sized bags. It still offers 30 cubic feet of volume, which is sufficient for weekend trips, while taking up less space on the roof rack.
You prefer more securing hardware included
The 40 CuFt XXL kit comes with six door hooks, two trunk hooks, three buckle straps, and three ratchet straps. This is more hardware than the 30 Cu.Ft. model, which includes four door hooks, four buckle straps, and two ratchet straps. The additional hooks and straps provide more flexibility for securing the bag to vehicles without crossbars or side rails.
You need a lighter bag for easier handling
The 30 Cu.Ft. model weighs 15.5 pounds, which is slightly lighter than the 40 CuFt XXL at 15.7 pounds. While the difference is minimal, the smaller size and lighter weight make it slightly easier to lift onto the roof and store in the included carry case when not in use. Both models share the same soft-shell vinyl construction.
The products compared
Mockins 30 cu ft Soft-Shell Vinyl Roof Bag
Best for: vehicles without roof racks needing waterproof storage
- Capacity
- 30 cu ft
- Shell Type
- soft-shell vinyl
- Water Resistance
- waterproof
- Security
- combination lock
- Vehicle Compatibility
- vehicles with or without roof rack
- Dimensions
- 60 x 43 x 20 in
View on Amazon: Mockins 30 cu ft Soft-Shell Vinyl Roof Bag Affiliate link
This Mockins soft-shell vinyl bag offers 30 cubic feet of storage, measuring 60 by 43 by 20 inches. It weighs 15.5 pounds and includes a protective roof mat, door hooks, and straps. The waterproof design features a zipper with a Velcro flap and welded seams. You can mount it on vehicles with or without roof racks. It folds into a carry case and includes a combination lock for security.
Pros
- 30 cubic feet capacity
- Waterproof vinyl shell with welded seams
- Includes roof mat and door hooks
- Works with or without roof racks
- Folds into its own carry case
Cons
- Smaller 30 cubic feet capacity compared to the 40 cubic feet XXL model
- Soft-shell vinyl construction is less rigid than hard cases
- Includes a combination lock but no key
Good fit if
- You need extra storage for a car without roof rails
- You want a waterproof bag that folds for compact storage
- You prefer a lighter 15.5 pound carrier
Skip if
- You require the maximum 40 cubic feet capacity
- You prefer a rigid hard-shell design for better aerodynamics
- You need a lock with a physical key included
Verdict: Mockins 30 CuFt All-Weather Rooftop Carrier is a practical option for drivers who need versatile storage without roof racks. It suits those who prioritize waterproof protection and compact folding over maximum volume.
Mockins 40 cu ft XXL Soft-Shell Roof Bag
Best for: Maximizing cargo volume 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 Mockins roof bag offers 40 cubic feet of storage, measuring 72 by 48 by 20 inches. It uses a soft-shell vinyl design that fits vehicles with or without existing roof racks. The waterproof construction includes reinforced seams and protected zippers to keep gear dry. It weighs 15.7 pounds and comes with a full mounting kit. This model suits you if you need maximum volume and flexible installation on various vehicle types.
Pros
- Generous 40 cubic feet capacity
- Fits vehicles with or without roof racks
- Waterproof vinyl shell with reinforced seams
- Includes 3 buckle straps, 3 ratchet straps, and hooks
Cons
- Heavier at 15.7 pounds than the 30 CuFt model
- Soft-shell material is less rigid than hard cases
- No mention of aerodynamic shaping for fuel efficiency
Good fit if
- You need the largest available storage volume
- Your vehicle lacks a roof rack system
- You want a waterproof bag for all-weather trips
Skip if
- You prefer a rigid hard-shell carrier
- You need a lighter bag under 10 pounds
- You only have standard crossbars and want a snug fit
Verdict: Mockins 40 CuFt Soft-Shell Roof Bag provides the highest capacity in this comparison, making it the best choice for moving large loads or fitting bulky items like tents and sleeping bags into a single bag.
Specifications side by side
| Spec | Mockins 30 cu ft Soft-Shell Vinyl Roof Bag | Mockins 40 cu ft XXL Soft-Shell Roof Bag |
|---|---|---|
| Capacity | 30 cu ft | 40 cu ft |
| Shell Type | soft-shell vinyl | Soft shell (vinyl) |
| Water Resistance | waterproof | Waterproof |
| Security | combination lock | Combo lock |
| Installation | not stated | Buckle/ratchet straps, door hooks |
| Vehicle Compatibility | vehicles with or without roof rack | With or without roof rack |
| Dimensions | 60 x 43 x 20 in | 72 x 48 x 20 in |
| Recommended Use | not stated | Suitcases, sleeping bags |
| Vehicle Type | Car, SUV, Truck | Car, SUV, Truck, Van |
| Mount Type | Roof Mount | Roof Mount |
| Includes Bag | With Bag | not stated |
| Weight | 15.5 pounds | 15.7 pounds |
| Size | 30 Cubic Feet | 40 Cubic Feet |
| Color | Black/Orange | Black/Orange |
| Model | MA-RB-30OR-88-V1 | MA-RB-40BLK-89-V2 |
Frequently asked questions
Which Mockins roof bag is better for SUVs without racks?
The Mockins 30 CuFt All-Weather Rooftop Carrier is the better choice for SUVs lacking roof racks. It is specifically listed as suitable for cars, SUVs, and trucks. The 40 CuFt model lists only cars. Both use soft-shell vinyl to secure cargo without requiring installed crossbars or racks.
How much heavier is the 40 cuft model compared to the 30 cuft?
The 40 CuFt XXL Soft-Shell Roof Bag weighs 15.7 pounds. The 30 CuFt Soft-Shell Vinyl Roof Bag weighs 15.5 pounds. The difference is only 0.2 pounds. This negligible weight variance means neither bag adds significant burden to your vehicle's roof load capacity compared to the other.
Do both bags fit on a standard car roof?
Yes, both bags are designed for car roofs. The 30 CuFt model measures 60 inches in length and 43 inches in width. The 40 CuFt model is larger at 72 inches long and 48 inches wide. You must verify your vehicle's roof dimensions to ensure the larger model fits safely.
What is the main difference in size between these two bags?
The primary difference is storage volume and footprint. The 40 CuFt bag offers 40 cubic feet of space, while the 30 CuFt bag provides 30 cubic feet. The larger bag is also longer by 12 inches and wider by 5 inches. This makes the 40 CuFt model suitable for bulkier items.
Are both bags waterproof for all-weather use?
Yes, both bags are designed for all-weather protection. They feature soft-shell vinyl construction that repels water. The 30 CuFt model is explicitly described as an All-Weather Rooftop Carrier. The 40 CuFt model also uses soft-shell vinyl, ensuring similar weather resistance for your cargo during rain or snow.
Which model has a larger capacity for camping gear?
The Mockins 40 CuFt XXL Soft-Shell Roof Bag has the larger capacity. It holds 40 cubic feet of cargo, which is ten cubic feet more than the 30 CuFt version. This extra space is ideal for fitting multiple large suitcases, tents, or sleeping bags into a single bag.