Mockins 40 CuFt XXL Soft-Shell Review: Who It Fits and Who Should Skip It

What stands out

• 40 cubic feet capacity with 72 x 48 x 20 inch dimensions
• Waterproof vinyl shell with reinforced seams and waterproof zippers
• Mounts to vehicles with or without roof racks using multiple strap methods
• Includes 3 buckle straps, 3 ratchet straps, 6 door hooks, and 2 trunk hooks
• Comes with a car roof mat and a carry bag for storage

Who it fits

Key specs explained for Mockins

Capacity: 40 cu ft

This volume offers ample room for large luggage piles. You can fit multiple suitcases, sleeping bags, or tent gear inside. It suits families or travelers carrying bulky items. Compare this to hard roof boxes, which often cap at 35 to 40 cubic feet. The flexible shape helps you load irregular items more easily than rigid containers.

Dimensions: 72 x 48 x 20 in

These measurements define the external footprint and height. The 72-inch length fits most standard car roofs, while the 48-inch width covers typical roof widths. The 20-inch height allows for stacking gear vertically. Check your vehicle roof size before buying. Ensure the bag does not extend too far over the sides, which could affect width clearance.

Shell Type: Soft-shell

This bag uses a flexible vinyl material rather than rigid plastic. It conforms to your roof shape and does not require crossbars for installation. You can attach it using hooks and straps directly to door frames or side rails. This makes it ideal for cars without existing roof racks. It folds flat for easy storage when not in use.

Weight: 15.7 pounds

This is the empty weight of the carrier bag itself. It is relatively light for a large soft-shell carrier. You can lift and position it on your roof without heavy lifting. The weight does not include your gear. Heavier bags can be harder to secure properly. This weight allows for easier handling during setup and takedown after your trip.

Design and Build Analysis

The listing describes a soft-shell construction made from abrasion-resistant vinyl. This material choice prioritizes flexibility over rigid protection. You can fold the bag when not in use, which simplifies storage in your garage. The waterproof zippers are covered by a protective flap. Reinforced seams add durability for long trips. This design allows the carrier to fit vehicles with or without crossbars, side rails, or roof racks. You do not need fixed hardware to install it. The bag adapts to different roof shapes. It serves as a versatile luggage solution for cars and SUVs.

The dimensions are 72 inches long, 48 inches wide, and 20 inches high. This layout provides 40 cubic feet of total volume. The weight is 15.7 pounds. This mass is manageable for one person to lift onto a roof. The color scheme is black and orange. The listing includes a car roof mat. This mat protects your vehicle’s paint and helps stabilize the bag during travel. You can secure the carrier using four different methods. These include buckle straps to side rails, door hooks, or trunk hooks. The kit comes with three buckle straps and three ratchet straps. Six door hooks and two trunk hooks are included. A carry bag stores all accessories when the roof bag is empty. This comprehensive kit means you have the necessary controls for a secure fit. The finish is practical rather than decorative. It focuses on function and ease of setup. You can load suitcases, sleeping bags, or tents without worrying about rack compatibility. The design suits travelers who need extra space but lack permanent roof fixtures.

Setup and Everyday Use Guide

The Mockins 40 cu ft bag installs without fixed crossbars. You secure it using four distinct methods. You can buckle straps to side rails using ratchet straps that pass through the vehicle. Alternatively, you may buckle only to side rails. The kit includes hooks for doors and trunks. You attach these with buckle and ratchet straps. A car roof mat protects your paint and stabilizes the load. The package provides three buckle straps, three ratchet straps, six door hooks, and two trunk hooks. This hardware allows you to adapt the fit to your specific vehicle type. The soft-shell design folds flat for storage. It fits into the included carry bag when empty. Daily use involves loading suitcases, sleeping bags, or tents. The waterproof zippers sit under a protective flap. Reinforced seams add durability for long trips. The abrasion-resistant vinyl shell shields your gear from weather. You do not need to remove the bag after every trip. The lock keeps contents secure during transport. The 72 by 48 by 20 inch footprint covers most roof areas. You must ensure your vehicle roof can support the weight. The 15.7 pound bag adds minimal tare weight. You load items evenly to maintain balance. The soft material conforms to roof contours. This helps reduce wind noise compared to rigid boxes. You check strap tension regularly. The ratchet mechanism allows tight adjustment. This setup suits travelers who lack permanent roof racks. It provides flexible storage for occasional or frequent use.

Before You Buy This Roof Bag

Before you buy, verify your vehicle dimensions. This bag measures 72 by 48 by 20 inches. It requires a roof width that can accommodate this footprint. Check if your side rails can handle the tension from the included ratchet straps. You must ensure there is enough clearance for door hooks if you choose that setup. The soft-shell design needs regular cleaning to maintain its waterproof integrity. Rinse off dirt and debris after each trip. Store it in the carry bag when not in use. This product fits alongside hard shell options if you prioritize flexible storage over aerodynamic efficiency. Hard boxes offer better security but lack this adaptability. Consider your typical load size. If you often haul bulky items like sleeping bags, this volume works well. For smaller loads, the 30 cubic feet option might suffice. Always inspect straps for wear. Replace them if they show signs of fraying. This ensures your gear stays secure during travel. The included roof mat helps protect your paint finish. Use it consistently to avoid scratches. Proper maintenance extends the life of the vinyl shell.

Check before you buy

• Check roof width fits 72 by 48 inches.
• Ensure side rails handle ratchet strap tension.
• Verify door clearance for hook installation.
• Inspect existing straps for fraying or wear.
• Confirm storage space for carry bag.

The product at a glance

1

Mockins 40 cu ft XXL Soft-Shell Roof Bag

Best for: vehicles 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 offers 15.7 pounds of storage capacity for luggage and gear. The waterproof vinyl shell protects contents from rain. It secures to vehicles without crossbars using hooks and straps. You get a complete kit with buckles and a carry bag. This carrier suits those needing extra space for trips.

Pros

• 40 cubic foot capacity for large loads
• Waterproof vinyl shell with reinforced seams
• Fits vehicles without roof racks
• Includes door hooks and ratchet straps
• Comes with a protective roof mat

Cons

• Soft-shell design offers less aerodynamic efficiency
• Heavier at 15.7 pounds than hard cases
• Requires manual strap tightening for security

Good fit if

• You need to transport bulky items like sleeping bags
• Your vehicle lacks roof crossbars or racks
• You want a waterproof storage solution for rain

Skip if

• You prioritize fuel efficiency over cargo space
• You prefer a rigid shell for better aerodynamics
• You need a compact carrier for daily commuting

Verdict: Mockins 40 CuFt Soft-Shell Roof Bag provides ample storage for families with vehicles lacking roof racks. It fits buyers who need waterproof protection and flexible mounting options for gear.

Specifications side by side

Frequently asked questions

See also

• mockins 40 cuft xxl soft shell alternatives
• mockins vs thule roof cargo box
• garvee rooftop tent soft shell review
• pocketbook shell review