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.


  • 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.
  • Comes with a stuff sack which doubles as a pump, a repair kit with six self-adhesive patches and a spare valve insert.
  • Airstream Pump/Stuff Sack can be used to inflate Aeros Pillows – turn the inflator bag inside out; the nozzle will fit the mini pillow valve.
  • BEST USE: Cold Weather Backpacking
  • COMES WITH: Stuff sack with integrated pump, repair kit & PillowLock
  • FABRIC: Durable 30D / 40D nylon
  • R-VALUE: 6.2
  • SEASON RATING: m4 Season
  • SPECIAL: Anti-microbial liquid-extruded TPU lamination to reduce delamination
  • THICKNESS: 4 in / 10 cm
  • WEIGHT: 37oz
  • DIMENSIONS: 79.1 x 25.2 in
  • PACKED SIZE: 7.3 x 11 in
Country of OriginImported
Style Number2072885
Product SKU35396200006
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