Rooftop Cargo Carrier 21 Cubic Feet Soft-Shell Waterproof Bag - Large

Our review of this rooftop cargo carrier finds it best suited for families and road-trippers who need an easy, high-capacity solution for extra luggage. The single biggest reason to buy is its 21 cubic feet capacity built from heavy 900D PVC, which frees up interior space and carries gear for 5-6 people without a rigid rack. Setup is straightforward and the included accessories make it a complete package for weekend trips or moving small loads.

Key Features

• 21 cubic feet capacity: Large interior (51in x 41in x 17in) fits multiple duffels and suitcases so passengers have more room inside the vehicle.
• 900D PVC construction: Thick fabric provides abrasion resistance and a structured shape that handles bulky loads better than thin tarps.
• Waterproof seams and zipper: Heat-welded seams and an upgraded waterproof zipper with a 6in wide velcro flap protect contents in rain and snow.
• Secure mounting system: Three reinforced adjustable straps, 10 reinforced straps total, and six door hooks hold the bag firmly to cars with or without rails.
• Safety extras: Included combination lock and reflective strip on the zipper flap improve security and visibility for night travel.
• Complete kit: The package includes an anti-slip mat and a storage bag so the carrier is ready to use and easy to stow when not needed.

Who It's For

The carrier is ideal for families, campers, and people moving between homes who need reliable extra cargo space without a permanent roof rack; its large storage capacity and universal fit make it a practical choice for SUVs, sedans, trucks, and vehicles with or without cross bars. It also suits travelers who prefer soft-shell storage that collapses flat when not in use.

Those who should look elsewhere include users who require a hard-shell rooftop box for long-term rooftop mounting or very heavy loads that exceed typical soft-shell limits, and buyers demanding a lifetime waterproof warranty since customer feedback on long-term waterproofing is mixed.

Pros & Cons

Pros

• Generous 21 cu ft volume handles luggage for 5-6 people without sacrificing interior comfort.
• Robust 900D PVC fabric with reinforced strap seams improves durability compared with thinner bags.
• Thoughtful accessories: anti-slip mat, door hooks, storage bag and a combination lock add real convenience.

Cons

• Waterproofing performance is generally good but customer reports are mixed on long trips, so extra caution is advisable for very heavy rain exposure.
• Soft-shell design cannot match a hard rooftop box for security or rigid load support.

Specifications

Our Verdict

This rooftop carrier is a strong value for families and travelers who need flexible, high-volume storage without installing a permanent roof rack. The 21 cu ft capacity, sturdy 900D PVC construction, and the thoughtful accessory set make it a practical, easy-to-use solution for weekend trips and short moves, though buyers should be mindful that waterproofing has mixed long-term reports compared with rigid roof boxes.

Frequently Asked Questions

Will this fit my car without roof rails?
Yes, the carrier is designed to install on vehicles with or without rails using the reinforced straps and included door hooks.

Is the bag fully waterproof?
The bag has heat-welded seams and an upgraded waterproof zipper with a wide velcro flap for strong weather protection, though some users report mixed results after prolonged exposure.

What comes in the package?
The package includes the cargo carrier, anti-slip mat, 6 door hooks, a combination luggage lock and a storage bag.