Materials: 30D polyester Made of 30D ultralight polyester, this lightweight and smallpacked-volume mat is portable Egg-crate design having individual (but interconnected) air sacs delivers superior comfort and insulation Dual-layer inner design guarantees the mat is usable even the bottom layer is punctured One-direction air valve allows you quickly inflate and deflate the camping mat Small packed volume, easy to carry TPU technology makes the mat flatter A repair kit included Dimensions: 183 x 52 x 5.5 cm Weight: 536g Packed Size: 9 x 25cm