Therm-a-Rest NeoAir Xlite NXT Ultralight Camping and Backpacking Sleeping PadThe standard for ultralight backpacking. The XLite NXT mattress delivers unrivaled comfort and warmth for minimal weight Foam free NeoAir design weighs just 13 oz (370 g) in size Regular and rolls up as small as a conventional 1 liter bottle 3 inch (7. 6 cm) thick profile and baffled internal structure provide unrivaled stability and support Equipped with a dependable and rugged WingLock valve providing easy inflation and lightning fast deflation