Sea to Summit Comfort Light Self-Inflating Sleeping Mat

The Sea to Summit Comfort Light Self-Inflating Sleeping Mat pairs open-cell Delta Core foam with an ASTM R-value of 3.1 and 5.1 cm of thickness. Self-inflating construction is inherently more puncture-tolerant than air-only pads and needs little more than an open valve to do most of the inflating itself — a welcome convenience at the end of a long day on trail. In regular size (170×51 cm) it weighs 595 g and rolls to 28×11 cm — bulkier than a comparable air pad, which is the usual trade-off for carrying a foam core. The reversible multi-function valve lets you inflate or deflate in one motion, and the anti-slip printed surface keeps a sleeping bag or quilt from sliding off during the night. With a warmth-to-weight ratio of 5.21 and a 10-year warranty, it suits hikers who value the reliability and simplicity of self-inflating foam over the last few grams saved by a pure air pad.