The Therm-a-Rest BaseCamp Sleeping Pad is a self-inflating pad for longer term camps. Set up camp and work spokes during the day or hike the summit and know you'll have a comfy space awaiting your return. The foam doesn't just self-inflate, it offers a cozy sleep spot when outdoors. The R-value of 6.0 allows for 4 season camps. Featuring a WingLock valve, it allows for incredibly fast and easy inflation and deflation.