The Comfort Light Insulated Mat from Sea To Summit is constructed as a double layer of resolution cells in the torso with a single layer of cells in the head and legs for reduced weight while adding comfort. It also features Thermolite insulation that adds warmth and reflects radient heat. Using a dot weld pattern to create a high surface area matrix of interconnected Air Sprung Cell chambers, it conforms to your body contours without affecting the surrounding cells. Includes a stuff sack sized for your mat. Light and small pack volume mat without compromising on comfort Constructed using a dot weld pattern to create a high surface area matrix of interconnected Air Sprung Cell chambers Hybrid layer technology features a double layer of cells in the torso for increased comfort and single layer in head and foot for reduced weight Includes Thermolite Insulation and Exkin Platinum to prevent heat transfer TPU Lamination and Antimicrobial Treatment inside mat Multi Function Valve that integrates an inflate port with a one way valve to prevent air loss before you seal the valve, a rapid air dump deflate port Includes stuff sack Repair kit Number of Air sprung Cells: Reg 331 Large 396 Material: 40 D Nylon Face Fabric Size: Reg 72 L x 21.5 W, Large 79 x 25 Rolled Size: Reg 4.5 x9 , Large 4.5 x 10 Weight: Reg 20.5 oz., Large 24.5 oz.