Review on 🚛 CZC AUTO Hitch Cargo Carrier Bag, 20 cu. ft Waterproof/Rainproof/Weatherproof Car Travel Bag for Trucks, SUVs, and Vans with Hitch Trays and Baskets - Safe, Sturdy, and Durable Soft Bag in Black by Kenji Townsend

UPDATE: I've had this bag for over two years now and it works really well. I have never had the wind lift the valve like some users do (exposing the zipper and allowing water in). I think this could almost always be avoided by filling the bag as full as possible. When I travel I fill my bag first and when it's full I put the rest in the car. We recently used this bag on our annual trip to Island Park, Idaho (near Yellowstone). A 250km drive in winter with wet roads, snow and ice on the way - we literally rode through blizzards. This was our third trip with this bag and so far everything has been dry in the bag! Considering how well this bag has performed and held up, I'm increasing my rating from 4 to 5 stars. First review: The material of the bag itself is clearly waterproof. The seams are sealed and definitely waterproof. The only issue might be the zipper, which is a cotton/nylon blend and allows water to flow through it like a fabric. It works well for me, it's behind my Nissan Armada (large SUV) so the wind doesn't lift the valve and expose the zipper - even after hours at 80mph. I only had a few drops of water which is acceptable for the price. If it had better lighting I would give it 5 stars. If you absolutely need a 100% waterproof bag, look elsewhere (and at four times the price), otherwise placing it behind a large SUV will do the trick to keep the weather out.