Sea to Summit Women's Ether Light XT Extreme Insulation Mat (size large)

The Ether Light XT Extreme is extra thick and exceptionally warm. The XT Air Sprung Cells provide four inches of stability and comfort, while dual-density layers of THERMOLITE® insulation prevent convective heat loss and internal air movement. This results in true four-season performance. Features 6.2 R-Value is perfect for cold weather adventures. At four inches thick, Ether Light XT Air Sprung Cells provides a plush sleeping experience. Dual-density layers of Thermolite® insulation fill the inner space, preventing heat loss due to convection and internal air movement. Lighter, quieter and durable 30D/40D face fabric with Sea to Summit’s liquid-extruded lamination is extremely reliable. Quick and easy inflation, deflation and adjustment is made possible by our multi-function valve and supplied Airstream Pump/stuff sack. Anti-microbial treatment added to the TPU lamination formula prevents internal mold growth. PillowLock system prevents your Sea to Summit Aeros Pillow from slipping. C