DESIGN & DETAILS: 1.1 R-value sleeping mat designed for warm weather use Lighter and quieter 30D/40D face fabric with Sea to Summit's liquid-extruded lamination provides extreme reliability Quick and easy inflation PillowLock system keeps your Sea to Summit pillow in place throughout the night Comes with a stuff sack that doubles as a pump, a repair kit with six-self adhesive patches, and a spare valve insert