More warmth for less weight, packaged to go. The WingLock™ valve is easy to use, and 1-way flow means no wasted breaths. The ThermaCapture™ lining reflects your body’s radiant heat back at you, creating 4-season comfort at a summer weight.

• 30-denier high-tenacity nylon on the top and bottom
• Triangular Core Matrix™ and reflective ThermaCapture™ provide great comfort, warmth and stability
• WingLock™ valve is 3x faster than conventional valves
• 1-way airflow is quick and easy to operate even while wearing gloves
• Deflates almost instantly
• Rectangular shape offers maximum coverage and warmth
• Included: Thermarest® pump sack, stuff sack, and repair kit