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

Sea to Summit's warmest sleeping mat, built for cold-weather operations where insulation and packability both matter.

The Sea to Summit Ether Light XR Pro uses Air Sprung Cell construction to deliver 10 cm of stable support in any sleeping position. Dual-layer Thermal Core® insulation with IR-reflective film blocks convective heat loss and internal air movement, achieving an R-value of 7.4. The mummy shape and 30D/40D nylon face fabric keep the mat compact and field-durable.

Features

• Dual-layer Thermal Core® insulation with IR-reflective film — R-value 7.4

• Air Sprung Cell construction provides 10 cm of support in any sleeping position

• 30D/40D nylon face fabric with liquid-extruded lamination — lighter, quieter, and durable

• 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

Technical Specifications

• R-value: 7.4

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

• Shape: Mummy

• Dimensions: 198 cm × 64 cm × 10 cm (L × W × thickness)

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

• Weight: 780 g