At Sea to Summit we set out to design a mat that was better than what was already available. 'Better' is of course a very subjective ambition: while we could have made the lightest, or the most compact mat ever designed, we ultimately went back to why we carry a sleeping mattress into the wild in the first place - to give us a better night's sleep. We're really proud to present what we consider to be the most comfortable sleeping mattresses available. Happy sleeping! Fabric: 30D / 40D nylon with anti-microbial liquid-extruded TPU lamination R-Value: 3.7 Insulation: Exkin Platinum fabric and Thermolite Includes an Airstream Pump that is integrated into the stuff sack for quick and easy inflation. Air Sprung Cells conform to your body shape, providing a more even dispersion of pressure across the mattress for a more comfortable nights sleep The Comfort Light range features dual layer construction in the torso for maximum comfort and insulation, and single layer construction in the head and legs where it's needed less. Exkin Platinum is a very lightweight and quiet metallised fabric. Exkin Platinum thermal technology reflects radiant heat back to the user. THERMOLITE insulation lofts up inside the Air Sprung Cells to prevent convective heat loss from your warm body to the cold ground. Multi-function valve provides fast inflate, deflate and easy fine-tuning for