A comfortable option for backpackers and adventurers who count every ounce, the Sea to Summit® UltraLight Self-Inflating Sleeping Pad offers a more comfortable night of sleep without a lot of extra bulk. Using Delta Core-V technology in its polyurethane foam core, this pad keeps body contact areas warmer and supported while keeping weight down and pack-ability high. Laminated to the foam core, the pad's durable 30-denier polyester fabric shell provides lightweight strength. A 1-way design, the pad's multi-function valve inflates and deflates the pad quickly, makes fine-tuning easy, and prevents air from re-entering the pad as you are rolling it up. Rolls up to a compact size close to a roll of paper towels. Compatible with Sea to Summit camping pillows featuring the Pillow Lock System (not included). R-value of 2.6. Imported.