MARPAT Woodland Backpack Cover. Made of nylon material that will fit a large or medium ALICE backpack or a pack of similar size ( inches - 22" x 20" x 19" or equal sized backpacks) . Make your existing backpack blend with your MARPAT uniform while protecting your contents from dust. Backpack Covers keep your gear free of dust and sand and provides you additional camouflage options by easily changing the color of your existing pack to match your current kit or uniform. Made from official USMC material produced in the United States (these have the EGA w/USMC in the pattern).