The Thermarest Trail King SV Large is a super fast, self inflating camping mat that combines SpeedValve™ technology with AirFrame™ Construction.
A backpacking mattress that inflates in a matter of seconds, the Thermarest Trail King SV Large also has an auto-reversing SpeedValve, that enables the mat to deflate at remarkable speeds. This unprecedented ease-of-use is fused with 2.5 inches of ultra-supportive loft and an R-Value of 1.8, making the Trail King SV a reliable and three-season mattress, designed to save you precious time in the backcountry. Stuff sack included.
Supportive Loft: AirFrame™ construction offers 2.5 inches (6.3 cm) of high-loft support
Fast Inflation: SpeedValve™ technology combined with self-inflating foam creates swift inflation
Faster Deflation: Auto-reversing SpeedValve™ deflates mattress in a flash