Therm-a-Rest Prolite Ultralight Self-Inflating Backpacking Pad Three-season self-inflating foam sleeping pad for backpacking and camping, ideal for sleeping in summer and shoulder-season weather Diagonal-cut foam offers more warmth than the typical vertical-cut foam with an R-value of 2.4 Expanding foam core is lightweight and compressible for easy packing; pad self-inflates and can provide firmer support with a few breaths Suited to backpacking and fast-and-light excursions, the 1-inch thick mattress is an ultra-compact backcountrysleeping solution Regular measures 72 x 20 x 1 inches inflated, packs to 11 x 4.1 inches, and weighs 18 ounces; stuff sack and repair kit included