DuPont Tyvek 55gm A4 - Pack of 20 Sheets (8.3" X 11.7") Can be recycled and therefore environment friendly Tyvek products can be made into other products like Tyvek Wallets, Tyvek Envelopes, Custom Tyvek Wristbands, Kites, Origami and many more Made of synthetic material, therefore make it water-proof Tear-proof Scratch resistant