Take on the great outdoors and stay comfortable with the Trail Scout Regular Self-Inflating Mattress in gray from Therm-a-Rest. Utilizing a solid PU foam core; this mattress unpacks from 11 x 5.6" to produce a 1" thick pad that measures 20" wide by 72" long. The expanding core self-inflates and the valve can be used to add a couple breaths of air to adjust as needed. It has a comfortable, durable, urethane top and bottom, as well as an r-value (thermal insulation) rating of 3.4 for adding warmth. The regular size weighs just 1.4 lb and comes with a stuff sack for portability. It is made in the U.S.A. and has a lifetime warranty.