Ether Light XR Insulated Air Sleeping Pad After a long day on the trail, the Ether Light XR eases you to sleep with its 10cm of Air Sprung Cell plush comfort. Getting your mat ready for the night is easy too - the Airstream pump integrated into the stuff sack and a high-airflow XPRESS valve make inflation quick and simple. ThermalCore technology provides a greater level of insulation than prior models, while keeping weight and volume low. Pop an Ether Light XR in your pannier or backpack and head into the backcountry knowing that your sleep comfort is one less thing to worry about. Tech Specs Best Use Tapered: Backpacking, Thru-hiking, Bikepacking Rectangular: Comfort Backpacking, Hunting Materials Mat: 100% Nylon Valve 100% TPU Stuff Sack: 100% Nylon Includes Stuff sack with integrated Pumpsack, PillowLock patches, repair kit R Value 4.1 Thickness 10 cm | 3.94 in Specifications by Size Size Weight Packed Weight Dimension Packed Size Length Recommended User Height Small 445 g | 15.7 oz 500 g | 17.6 oz 168 x 55 x 10 cm | 66 x 22 x 4 in 20.5 x 11 x 11 cm | 8 x 4 x 4 in 168cm | 66in 168 cm | 66.14 in Regular 470 g | 16.6 oz 525 g | 18.5 oz 183 x 55 x 10 cm | 72 x 22 x 4 in 20.5 x 11 x 11 cm | 8 x 4 x 4 in 183cm | 72in 183 cm | 72.05 in Regular Rectangular Wide 605 g | 21.3 oz 665 g | 23.5 oz 183 x 64 x 10 cm | 72 x 25 x 4 in 24 x 12 x 12 cm | 9 x 5 x 5 in 183cm | 72in 183 cm | 72.05 in Large 605 g | 21.3 oz 665 g | 23.5 oz 198 x 64 x 10 cm | 78 x 25 x 4 in 24 x 11.5 x 11.5 cm | 9 x 5 x 5 in 198cm | 78in 198 cm | 77.95 in Large Rectangular 665 g | 23.5 oz 725 g | 25.6 oz 198 x 64 x 10 cm | 78 x 25 x 4 in 23.5 x 12 x 12 cm | 9 x 5 x 5 in 198cm | 78in 198 cm | 77.95 in Key Features ThermalCore insulation with a suspended TRM layer reflects warmth back to the sleeper effectively Extended 3 season capable, ASTM-tested R-Value of 4.1 Lighter weight and significantly reduced packed size compared to prior models Air sprung cell construction, 10cm | 3.9in thick for plush, stable comfort in any sleeping position XPRESS valve and pumpsack integrated into stuff sack make inflation, adjustment and deflation a breeze Increased weld strength for greater durability PillowLock System patches secure your Aeros Pillow for a slip-free sleep Available Options Size Small Regular Regular Rectangular Wide Large Large Rectangular