21 Cubic Feet Car Rooftop Cargo Bag Carrier - Weatherproof, Anti-Slip

In this review of the 21 Cubic Feet Car Rooftop Cargo Bag Carrier the bottom line is clear: this soft roof top luggage bag is best for families or groups who need a large, weatherproof, temporary roof cargo solution without a rack. The reviewer found the single biggest reason to buy is the combination of a high-quality waterproof zipper with a wide velcro flap and heavy-duty 900D PVC fabric, which together keep gear dry and resist abrasion on long drives. It reads like a practical upgrade for road trips where rigid carriers are unnecessary.

Key Features

• 100% Weatherproof: The upgraded waterproof zipper and wide velcro flap protect contents from rain and road spray for worry-free travel.
• Rip-Resistant Construction: Heavy-duty 900D anti-abrasion PVC fabric and triple-reinforced welded seams improve durability and resist tearing under normal loading conditions.
• Anti-Slip Protection: The included anti-slip mat prevents the bag from sliding on the roof and also helps protect paint from scratches.
• Anti-Theft Feature: A supplied code lock adds a basic deterrent against opportunistic theft while parked during stops.
• Large Capacity: With 21 cubic feet (L52' x W39.5' x H17.5') of space the bag easily accommodates luggage for a family of 5-6 on weekend or week-long trips.
• Fits All Cars: Extra door hooks and versatile straps let the bag be used with or without a roof rack on most vehicles and SUVs.

Who It's For

This rooftop cargo bag suits families and road trippers who need roomy, temporary storage beyond their trunk or hatch, but who do not want to install a permanent hard carrier. It is also a good choice for drivers who occasionally need to transport bulky items like camping gear or sports equipment and value weather protection and scratch prevention.

It is less ideal for someone seeking a permanent, lockable hard-shell solution or for frequent long-term roof use in extreme conditions where a rigid carrier might offer greater long-term security and aerodynamics. Buyers who need ultra-compact storage when not in use should consider how they will store the empty soft bag.

Pros & Cons

Pros

• Spacious 21 cu ft capacity fits luggage for a family of 5-6 without compressing gear too tightly.
• Waterproof zipper plus velcro flap offers strong protection from rain and roadside spray.
• Durable 900D PVC fabric and reinforced seams resist abrasion and extend product life.
• Anti-slip mat and code lock increase on-road stability and basic theft deterrence.

Cons

• As a soft carrier it is less secure and aerodynamic than a hard-shell roof box for very frequent highway use.
• When empty the bag still requires storage space at home, which may be inconvenient for some users.

Specifications

Capacity	21 cubic feet
Dimensions	L52' x W39.5' x H17.5'
Material	900D anti-abrasion PVC fabric
Weatherproofing	Waterproof zipper with wide velcro flap
Security	Included code lock
Extras	Anti-slip mat, door hooks, storage bag
Compatibility	Works with or without roof rack on most cars and SUVs

Our Verdict

Overall this 21 Cubic Feet Car Rooftop Cargo Bag Carrier is a practical, value-oriented solution for families and occasional travelers who need a large, weatherproof soft carrier without permanent installation. Its heavy-duty fabric, waterproof zipper with velcro flap, anti-slip mat and code lock make it a reliable choice for road trips, while the generous 21 cu ft capacity handles multiple suitcases. Choose this if you want flexible, protected roof storage and do not require the rigidity or aerodynamics of a hard-shell box.

Frequently Asked Questions

Is this bag waterproof in heavy rain?
The bag uses a waterproof zipper and a wide velcro flap to seal the opening, which provides strong protection from rain and road spray in typical driving conditions.

Will it fit cars without a roof rack?
Yes, the bag includes extra door hooks and straps so it can be secured to most cars and SUVs without a roof rack.

How much luggage can it hold?
With 21 cubic feet of space (L52' x W39.5' x H17.5') it can comfortably carry luggage for a family of 5-6, depending on packing style.