20ft³ Waterproof Hitch Cargo Carrier Bag, Durable PVC Tarpaulin Hitch Mount Cargo Carrier Cargo Box w/a Bonus Lock, Heavy-Duty Straps & Buckles, Easy to Install Vehicle Cargo Carriers

Bought this so I could stow our luggage (4 people) in the back of the pickup truck (I bought the truck in another state and flew over to drive it back 2,000 miles). Kept the luggage perfectly dry. Easy to unpack, unfold, zip up and tie down into the trucks tiedown points. Folding it back up is not hard, I changed the fold shape so it would be somewhat thinner and longer and fit under the back seats of the F-150. As for capacity, we could have fit three or four more pieces of luggage.

This cargo bag holds ALOT! It is durable and waterproof. It held large pieces of luggage, duffle bags and other items with room to spare. We had other travelers asking where we got it and taking pictures of it. Great quality and value!

Only used 1 trip. I encountered some snow and rain but everything in the bag remained dry. Bag is sturdy which makes it a bit hard to zip especially in cold weather. It has a flap that folds down over the zipper to keep moisture out. The nylon zipper needs to be oiled occasionally. I found it a little hard to zip around the coroners my first trip in cold weather. This bag comes with tie down straps that seem to be in the wrong place and or the wrong length to use on my "Curt" cargo carrier. I secured the bag instead with 4 turnbuckle straps and had no problem. I only gave it 4 stars for durability because I have only used it 1 time and I am wondering how the nylon zipper will hold up.

Just got back from a 1,700 mile drive with the bag stuffed on a hitch cargo carrier through very heavy rain for several hours on two occasion with absolutely no water leaks! Bag worked great!

Seems to be well made and should be waterproof. Flaps hang over the zipper to further waterproof the bag. The vendor includes some grease to coat the zipper for waterproofing and making it easy to open and close the bag. Not tested the bag in a rainstorm yet but should work great based on construction.