Thanks to cushy padding and a soft surface, the REI Camp Bed 3.5 Self-Inflating Sleeping Pad provides a comfortable place to rest while you're away on your car-camping adventure. Features: -Horizontally cored foam reduces weight and bulk -3.5-inch thickness provides ample cushioning -2 quick-closing, high-flow valves -Soft, stretch polyester top -150-denier polyester bottom resists wear -All seams are welded -R-value equals 6.0; most sleeping pads REI sells range in R-value from 1.0 (minimally insulated) to 9.5 (highly insulated) -Includes a stuff sack