Featuring Exkin Platinum fabric to reflect heat loss back to the user and Thermolite insulation, the Sea to Summit Comfort Light Insulated Sleeping Pad features a hybrid layer of Sprung Cell Technology with a double layer of high resolution cells in the torso for maximum insulation and comfort. Quiet, nonwoven Exkin Platinum fabric reflects heat back toward the user. Thermolite insulation prevents convective heat loss between your body and the ground R value of 4.2. Single layer of Air Sprung Cell Technology with a double layer of high resolution cells in the torso for maximum comfort and insulation, while keeping weight down. Insulation R value: 4.2 Number of Air Sprung Cells: 396 Thickness: 2.5 in. 6.3 cm. Air Sprung Cells conform to your body, delivering more support and comfort than pads using tubes or baffles. Multifunction valve for fast and easy inflationdeflation and fine tuning of air pressure. 40D nylon ripstop fabric offers the perfect balance between light weight and durability. TPU lamination delivers a better more consistent bond and virtually eliminates any issues with delaminating. Antimicrobial treatment is added to TPU to prevent any issues caused by warm, moist air trapped inside mat. Includes a stuff sack and repair kit containing six self adhesive patches and a spare silicone one way valve flap.