For maximum comfort in the backcountry, the Sea to Summit Ether Light XR Insulated ASC Sleeping Mat - Grey (Large Rectangular) delivers a roomy, rectangular platform with proper cold-night performance. You get 10 cm Air Sprung Cell cushioning for plush support and excellent stability, plus ThermalCore insulation that reflects warmth back to you for efficient 3-season use. The Airstream pump integrated into the stuff sack makes inflation quick and more hygienic than mouth inflation, while the high-airflow XPRESS valve helps you fine-tune firmness and pack down fast. It’s a strong pick for hunters, comfort backpackers, and anyone who wants at-home sleep feel outside.

Sea to Summit Ether Light XR Insulated Mat (Large Rectangular) – Key Features

• Large rectangular comfort: Full-width sleeping space for comfort backpacking and hunting.
• ThermalCore insulation: Suspended TRM layer reflects warmth back to the sleeper effectively.
• Extended 3-season warmth: ASTM-tested R-Value of 4.1.
• 10 cm thick cushioning: Air Sprung Cell construction for plush, stable support.
• XPRESS valve control: Inflate, adjust, and deflate quickly with high airflow.
• PillowLock compatible: Included patches help prevent pillow slip overnight.

Specifications – Ether Light XR Insulated ASC Sleeping Mat (Large Rectangular)

• Best Use: Comfort Backpacking, Hunting (Rectangular)
• Comes With: Stuff sack with integrated pumpsack, PillowLock patches, repair kit
• Material(s): 30/40D nylon with TPU lamination, single-layer TRM reflective insulation
• R-Value (ASTM): 4.1
• Thickness: 10 cm (3.9 in)
• Weight: 665 g
• Stuff / Pump Sack Weight: 60 g
• Packed Weight: 725 g
• Packed Size: 23.5 x 12 x 12 cm
• Fits Up To Height: 198 cm