The fastest self-inflating mattress on the market, the Therm-a-Rest Trail King SV sleeping pad combines AirFrame construction with SpeedValve technology to save you precious time in the backcountry. A combination of SpeedValve technology and AirFrame Construction creates a 3-season backpacking mattress that inflates in a matter of seconds. Alternating foam and air channels deliver 2.5 in. of high-loft support with a 1.8 R-value. SpeedValve technology combined with self-inflating foam creates swift inflation; auto-reversing SpeedValve deflates mattress in a flash!
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