Add an extra layer of protection over your backpack with this U.S. Military Cover. Locks out dirt, dust and sun. Add your own waterproof treatment and be ready against the elements, too. Great cover for many similar-sized objects, like tires, grills or other outdoor gear. Fits various generations of field packs 100% cotton in white snow camo Not waterproof, but designed to be treated for waterproofness Elastic band for a snug, secure fit