Introducing the Sea to Summit Ether Light XT Extreme Mat - Large, the perfect sleeping companion for your winter adventures around the world. We know how crucial a good night's sleep is, especially when temperatures plummet. That's why we've increased the insulation in our best-selling Ether Light XT mat to create the Ether Light XT Extreme - designed to keep you warm when the mercury drops. With an R-value over 6, our 10cm thick Ether Light XT Extreme air mat is the ultimate solution for lightweight sleeping comfort in extreme conditions. Our unique Air Sprung Cells technology ensures your body is fully supported throughout the night by dispersing pressure evenly across the mat's surface. Our extra thick design uses TPU loops to connect the top and bottom fabric layers to our Air Sprung Cell dot weld pattern. This innovative feature allows for larger pockets of air when inflated, creating the ultimate comfort for side sleepers. Plus, the design requires less fabric overall which means less weight for you to carry. Our dual-density THERMOLITE® insulation fills the Air Sprung Cells, working together to prevent convective heat transfer and boost warmth. You can rest easy knowing that when the temperature drops, the Ether Light XT Extreme's 6.2 ASTM R-value will keep you cushioned and insulated from the cold hard lumps and bumps beneath. Don't compromise on comfort during your next winter adventure. Choose the Sea to Summit Ether Light XT Extreme Mat - Large for ultimate support, warmth and a good night's sleep. Order now and experience the difference for yourself! eXtra Thick (XT) loop baffle Air Sprung Cells™ Thicker THERMOLITE® layer for increased warmth Lightweight, quiet and grippy 30/40D Nylon fabric, field repairable with included self-adhesive patches Exkin Platinum® and THERMOLITE® for insulation Air Sprung Cells™ for a more comfortable sleep Ultra-Fresh® anti-microbial treatment to the TPU formula to prevent internal mould growth Multi-functional, high flow-rate valve PillowLock™ attaches your Aeros™ pillow to your mat, holding it in XT means place for a slip-free sleep Insulation Type: Thermolite Construction: Single Layer Length/Width: Regular: 183 x 55 cm, Large: 198 x 64 cm Rolled Size: Regular: Ø17.5 x 24cm, ØLarge: 18.5 x 28 cm R Value: 6.2 Shape: Mummy Thickness: 10 cm Weight: Large: 950G