Sea to Summit's Tyvek Ground Sheet is invaluable for protecting your gear from ground water, thorns, sticks, mud, and dirt. Sea to Summit's Tyvek Groundsheet is sized to fit under either of the Escapist mesh Inners. It is a very tough, waterproof material that sheds mud and water easily while only adding minimal weight to your bag. Features and Specifications Sized to fit perfectly underneath either of the Escapist mesh inner footprints Made from tough and durable, waterproof breathable Tyvek® Only weighs 165g Length: 220 cm Width: 130 cm tapers to 120cm other end Weight: 165 grams Sea to Summit Escapist Tyvek Ground Sheet