For essential comfort and warmth in the backcountry, the Therm-a-Rest Trail Scout Self-Inflating Foam Camping Mat with WingLock Valve is a favorite for blazing new trails. The 1-inch thick sleeping pad has a 3.1 R-value to comfortably allow for three-season camping and backpacking (R-value measures the materialâs ability to insulate; the higher the R-value, the warmer the sleeping pad). Designed with lightweight self-inflating foam, the Trail Scout will self-inflate once the valve has opened; top off with just a few breaths. Equipped with a dependable and rugged WingLock valve, the pad inflates 3 times faster than a classic valve and features lightning-fast deflation. The Trail Scout sleeping pad also includes a stuff sack to protect the pad when it's packed down. Available in three sizes: Small measures 47x20x1 inches, packs to 11x4.8 inches, and weighs 14 ounces; Regular measures 72x20x1 inches, packs to 11x5.8 inches, and weighs 22 ounces; Large measures 77x25x1 inches, packs to 13x5.8 inches, and weighs 30 ounces. Made in the USA. Manufacturerâs limited lifetime warranty.