Bring a legendary amount of comfort into the backcountry with the ultra-comfy Therm-a-Rest Trail Pro Self-Inflating Foam Camping Mattress. Available in two styles: Equipped with the Standard Valve, or equipped with the WingLock Valve which is able to inflate a pad three times faster than a standard valve thanks to a larger barrel and optional one-way inflation, but the Trail Pro with WingLock Valve has been redesigned from its predecessor. The WingLock style inflates to an impressive 3 inches making it one of the thickest self-inflating backpacking pads available, features Thermarest’s StrataCore construction that helps save weight while adding warmth, uses an ultra-cozy stretch knit fabric to maximize comfort in the backcountry, and boasts a 4.4 R-value for year-round adventuring (R-value measures the material’s ability to insulate; the higher the R-value, the warmer the sleeping pad). Where the Standard Valve style has a 4.0 R-value, and is 2 inches thick. Both styles feature an expandable foam core that will self-inflate; top off with a few breaths. Both styles include a stuff sack to protect the pad when it's packed down. Made in the USA. Manufacturer’s limited lifetime warranty.