AlltoAuto 38 cu ft Truck Bed Cargo Bag – Waterproof 600D PVC, Heavy-Duty Straps

AlltoAuto's 38 cubic feet truck bed cargo bag is a heavy-duty, fully waterproof PVC storage solution designed to carry oversized gear securely across long highway trips.

When you need to move large loads that won’t fit inside your cab or through a rooftop carrier, this oversized truck bed bag offers a practical alternative. Built from rugged 600D PVC with heat-welded seams and a wide three-sided zipper, it protects belongings from rain and road spray while making loading and unloading straightforward. The bag packs down into an included storage pouch when not in use and is shaped to take full advantage of standard full-size pickup beds.

How big is the AlltoAuto cargo bag and what fits inside?

The bag provides 38 cubic feet of internal capacity — nearly double many conventional cargo bags — so it holds bulky, irregular items without strapping them to the roof. It’s intended for full-size pickup beds and configured to use the bed floor efficiently.

• 38 cu ft internal volume for large luggage, camping gear, sports equipment.
• Holds multiple suitcases or several duffel bags at once.
• Designed to fit F150, Silverado, RAM, Sierra style full-size beds.

Is the bag really waterproof and how is it sealed?

The shell is made from 600D heavy-duty PVC and uses high-frequency heat-welded seams, which avoids needle holes that can let water through. A waterproof three-sided zipper sits beneath an extra-wide flap to block rain and highway spray for dryer contents.

• 600D PVC outer material resists punctures and abrasion.
• Heat-welded seams eliminate needle perforations common in sewn bags.
• Wide protective flap covers the waterproof 3-side zipper for added rain protection.

How does the bag stay secure during highway driving?

AlltoAuto included four reinforced heavy-duty straps to anchor the bag in the bed and prevent movement at highway speeds. The straps are rated and positioned to keep the load stable, minimizing shifting and reducing wind lift on longer trips.

• Four reinforced straps attach to bed anchors or tie-down points.
• Engineered to maintain stability at speeds up to 75 mph.
• Durable buckles and strap webbing resist abrasion and UV exposure.

How easy is it to load, unload, and store the bag?

The extra-wide three-side zipper opens large sections of the top and side so one person can load bulky items without wrestling with awkward angles. When empty, it folds compactly into the included storage bag to save space in a garage or trunk.

• Rugged 3-side zipper provides wide access for single-person loading.
• Folds down and stores in the provided compact carry pouch.
• Lightweight enough to position in the bed without a second helper.

Who is this for? Owners of full-size pickups who frequently haul oversized or wet gear — like campers, moving families, outdoor athletes, and weekend warriors — will find this AlltoAuto bag useful. It’s suited for anyone who wants a secure, waterproof, high-capacity alternative to rooftop carriers or open-bed tie-downs, and for those who prefer a solution that stores compactly when not in use.