Sea to Summit Ether Light XT Extreme Sleeping Mat

£235.00

Size

Free Delivery: Available on all orders over £50.

Next-Day Delivery: Available for orders placed before 3 PM with DPD (additional charges apply).

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EXTRA THICK AND EXCEPTIONALLY WARM - 10CM OF SLEEPING COMFORT FOR EXTREME CONDITIONS

With an R-value over 6, the 10cm thick Ether Light XT Extreme Insulated 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 this air mat. 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 the extra thick (XT) Ether Light design, many TPU loops are used to connect the top and bottom fabric layers to the 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 Light XT Extreme’s 6.2 ASTM R-value will keep you cushioned and insulated from the cold hard lumps and bumps beneath. Extra thick and exceptionally warm—10cm of backpacking sleeping comfort for extreme conditions.

FEATURES OF THE SEA TO SUMMIT ETHER LIGHT XT EXTREME SLEEPING MAT

  • ASTM R-value 6.2 is designed for cold-weather use

  • Dual-density layers of THERMOLITE® insulation

  • Extra thick (XT) Air Sprung Cell construction for 10cm stable comfort

  • Lightweight, quiet and grippy 30/40D Nylon face fabric

  • Field repairable with included self-adhesive patches

  • Ultra-Fresh® anti-microbial treatment added to the TPU formula prevents internal mould growth

  • Pillow Lock attaches an Aeros pillow to mat

  • Quick and easy inflation, deflation and adjustment with the multi-function, high flow-rate valve and supplied Airstream Pump Sack

  • Size + Specifications

    Regular
    Length - 183cm

    Width - 55cm

    Height - 10cm

    Packed Dimensions - 17.5 x 17.5 x 24cm

    Weight - 720g

    R Value - 6.2

    Large
    Length - 198cm

    Width - 64cm

    Height - 10cm

    Packed Dimensions - 18.5 x 18.5 x 28cm

    Weight - 950g

    R Value - 6.2

    Rectangular Regular Wide
    Length - 183cm

    Width - 64cm

    Height - 10cm

    Packed Dimensions - 18.5 x 18.5 x 28cm

    Weight - 950g

    R Value - 6.2

    Rectangular Large
    Length - 201cm

    Width - 64cm

    Height - 10cm

    Packed Dimensions - 18.5 x 18.5 x 28cm

    Weight - 1050g

    R Value - 6.2

  • Weight

    720 g

  • Season Rating

    4-Season

  • R Value

    6.2

Valley and Peak Promise

"The Valley and Peak promise is built on three pillars: thoughtfully curated gear, exceptional customer service, and a genuine love for the outdoors. As an independent, family-run business, we carefully select products from a wide variety of cottage gear brands and trusted names, ensuring that each item is rigorously tested and loved by our team. Our customer service is a cornerstone of our brand, offering personalised support to help you choose and care for your gear with confidence"

Jim De'Ath, Managing Director