Dynomighty Mighty Tyvek Wallet, WAR OF THE WORLDS 1 by Lukas Brezak, Water Proof 2 large pockets for cash and receipts. 2 credit card pockets that expand to hold lots of cards. 2 quick access business card pockets. 4 writable business cards included. Dimensions (open) 3.25"h X 8"w X 0.125"d, 0.6 oz Tyvek is engineered to be tear resistant, water resistant, thin and durable.