Inspired by the U.S.Military, Relwen set out to make a bag you’ll own forever. Their 1000 denier nylon oxford shell fabric is nearly indestructible. The material is coated for water resistance while the bag is lined with olive ripstop for additional protection. It features an interior zipper patch pocket, along with shoulder straps that are easily attached or removed with quick-release metal hinges. This is the BIG version of Bivouac Bag. It’s a beast, boasting a volume of 4,620 cubic inches. Or enough room to fit three weeks worth of clothing without confronting a washing machine. And if still not sure how big this is, imagine a full sized keg +30%. Fold flat and stow when not in use.