Thermarest z lite camping mat regular coyotegrey our ultralight three season camping mattress is perfect for those go anywhere sleep on anything treks and bivies where every ounce counts all new proprietary foams are softer on top for extra comfort and denser on the bottom for extra durability and the accordion shape packs more comfort into a smaller space than any other closed cell foam mattress out there travel ultralight weighing less than a pound this mattress goes anywhere eas