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Sleeping pads provide insulation as well as cushion, and the regular Prolite Plus Self-Inflating Mattress from Therm-a-Rest is designed to prevent heat loss to the cold ground even in winter conditions. This self-inflating, firmness-adjustable mattress pad features diagonal foam construction for an insulating R-value of 3.4, which will help keep you comfortable in any season. Simply unroll it and open the valve to allow the foam to self-inflate, then add a few breaths for firmer support or squeeze a little air out for a softer feel. The Prolite Plus measures 72 x 20 x 1.5" and packs down to 11.0 x 4.8". The pad is filled with 1.5" of urethane foam and is constructed with a 50 denier mini Hex Rip polyester top and a durable 50 denier polyester bottom. At just 20 oz, it's suitable for backpacking.
Self-inflating pad can be adjusted for desired firmness
Designed for four-season use
Diagonal foam construction yields R-value of 3.4 for insulation in cold conditions
Measures 72 x 20 x 1.5"; packs down to 11.0 x 4.8"