This packable and lightweight pad is made for summer and indoor use. There is no insulating structure or fill, and the R value is 1.1. - Large size: the head end is 64 cm wide, foot width 47 cm and length 198 cm - Surface fabrics of 30 and 40 denier - PillowLock helps keep Sea To Summit (not included) in place - Includes a packing bag that also acts as a pump, as well as a repair kit It is always a good idea to fill the pad with the supplied pump bag, as blowing will introduce moisture in it.