The new Sea to Summit Ether Light XT Insulated Air Sleeping Mat is a perfect three-season pad backpackers and campers looking for a quiet, lightweight and comfortable air sleeping pad. The XT Air-Sprung Cells use loops of a strong, flexible material to provide a plush, 4" thick sleeping experience. Lighter, quieter and grippy 30/40D Nylon fabric is easily field repairable with the included self-adhesive patch kit. The Extrusion TPU Lamination continues Sea to Summit’s class-leading reliability. Exkin Platinum insulation reflects your radiant heat back to you, Thermolite insulation prevents convective heat loss. Easy to inflate with the multi-function, high flow-rate valve combined with the included Airstream Pumpsack/Stuff Sack integration. Ultra-Fresh anti-microbial treatment is added to the TPU formula to prevent internal mold growth. PillowLock attaches any inflatable camp pillow(not included) securely to the mat. Includes Stuff sack with integrated Airstream Pump, Repair Kit, PillowLock. SEASON RATING: 3 Season, R-Value: 3.8. THICKNESS: 4 in / 10 cm.