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Sea To Summit Ether Light XT Extreme Sleeping Pad · Black

Sea To Summit Ether Light XT Extreme Sleeping Pad · Black

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Product details

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.
Sleeping pad type
Air pads
Intended use
Sleeping capacity
3 lb 4 oz
Stuff sack w/ integrated pump, repair kit & Pillow Lock
Sleeping pad shape
Sleeping pad fabric
Thickness (in)
4 in.
Packed size
7.3 x 11in
Age Group
Sea To Summit Ether Light XT Extreme Sleeping Pad · Black
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Top reviews
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Gregg Mason
Gregg Mason
Verified camping & hiking expert
Reviewed Aug 9, 2022

Great cold weather, light weight option with 4" of comfort and and an R value of 6.2 - The pump sack allows you to quickly inflate without using lung power further enhancing the life by not allowing moisture to enter. The pillow lock feature allows you to add a S2S Aeros pillow attachment.

Dave McCaul
Dave McCaul
Verified camping & hiking expert
Reviewed Aug 9, 2022

Sleeping well in frigid conditions. Their air-sprung cells mimic your home mattress the best.