The surprisingly light & compact Thermarest Neo Air Trekker air mattress offers exceptional comfort & durability for maximum versatility. Our patent-pending Triangular Core Matrix technology creates over 100 internal cells to provide ample three-season warmth without the bulk of added insulation, while providing the most stable nights rest of any air mattress made. A rugged polyester bottom boosts all-purpose durability & a supple polyester top is the right choice for those seeking to trim weight, not comfort. Stuff sack included. Features Superior Stability: Patent-pending Triangular Core Matrix construction creates over 100 internal cells that equalize air distribution for unmatched stability. Efficient Warmth: Internal cells trap heat & slow convective heat loss without the unnecessary weight or bulk of synthetic or down fill. Compact & Light: Manual inflation, advanced materials & fiberless insulation assure the lightest & most compact mattress possible. Lasting Performance: Rugged, 100D polyester bottom & supple, 75D top assure maximum versatility with the durability & comfort to handle a wide range of uses.