Sea To Summit Ether Light XT Extreme Rectangular Sleeping Mat

Sea To Summit have taken their best-selling Ether LightXT mat and increased the insulation to make it warmer for when the mercury drops, and made a rectangular for added comfort.

With an R-value over 6, Sea To Summit's 10cm thick Ether LightXT Extreme air mat redefines lightweight sleeping comfort for winter adventures around the globe.

Sea to Summit's Air Sprung Cells are the reason you will sleep better on our air mats. Each Air Sprung Cell deforms independently and allows the mat to conform to your body shape. This provides support and comfort by more evenly dispersing pressure across the mat’s surface.

For Sea To Summit's extra thick (XT) Ether Light design, we use many TPU loops to connect the top and bottom fabric layers to Sea To Summit's Air Sprung Cell dot weld pattern. These loops allow the top and bottom layers to be positioned  further apart which creates larger pockets of air when inflated—perfect for side sleepers. This design also  requires less fabric overall which means great stability and comfort for less weight.

Dual-density layers of THERMOLITE® insulation fill the Air Sprung Cells and work together to prevent convective heat transfer and boost warmth while remaining lightweight and packable.

When the mercury drops, the Ether LightXT Extreme’s 6.2 ASTM R-value will keep you cushioned and insulated from the cold hard lumps and bumps beneath.