Sea to Summit Ether Light XR Pro Insulated ASC Mat - Rectangular Large Wide black

Sea to Summit's warmest sleeping mat, engineered for cold and extreme cold expeditions where insulation and comfort cannot be compromised.

The Sea to Summit Ether Light XR Pro combines Air Sprung Cell construction with dual-layer Thermal Core® insulation to achieve an R-value of 7.4. The 10 cm loft delivers a stable sleeping surface in any position, while the insulation layer blocks convective heat loss and suppresses internal air movement. Built from 30D/40D nylon with liquid-extruded lamination for durability and reduced noise.

Features

• R-value of 7.4 — rated for cold and extreme cold conditions.

• Dual-layer Thermal Core® insulation with IR-reflective film blocks convective heat loss.

• Air Sprung Cell design provides 10 cm of cushioning regardless of sleeping position.

• 30D/40D nylon face fabric with liquid-extruded lamination — durable and quiet.

• XPRESS valve with Airstream Pump/stuff sack for fast inflation and deflation.

• Anti-microbial TPU lamination prevents internal mold growth.

• PillowLock system compatible with Sea to Summit Aeros pillows.

• Includes stuff sack/pump, repair kit with six self-adhesive patches, and spare valve insert.

Technical Specifications

• Material: 30D/40D nylon with liquid-extruded lamination

• R-value: 7.4

• Length: 198 cm

• Width: 64 cm

• Thickness: 10 cm

• Weight: 850 g