Sea to Summit Ether Light XR Pro Insulated ASC Mat - Regular black

The highest R-value mat in the Sea to Summit lineup, engineered for cold-weather expeditions where insulation from the ground is critical.

The Ether Light XR Pro Insulated Mat combines Air Sprung Cell construction with dual-layer Thermal Core® insulation to achieve an R-value of 7.4. The mummy shape and 10 cm loft maintain support across all sleeping positions, while the insulation layer blocks both convective heat loss and internal air movement. Constructed from 30D/40D nylon with liquid-extruded lamination for durability and reduced noise.

Features

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

• Air Sprung Cell design delivers 10 cm of support regardless of sleeping position.

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

• Anti-microbial treatment in the 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

• R-value: 7.4

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

• Shape: Mummy

• Length: 183 cm

• Width: 55 cm

• Thickness: 10 cm

• Weight: 620 g