Sea To Summit Ultralight sleeping mats use a single layer of medium resolution Air Sprung CellsŸ?« to give you the lightest and smallest packed-volume mat, without compromising your comfort.For warmth, they use Exkin® Platinum, a quiet non-woven fabric that reflects radiant heat loss back towards your body, and Thermolite® insulation that prevents convective heat loss between your body and the ground.All Sea to Summit sleeping mats come with a quality stuff sack, a repair kit containing six self adhesive patches for repairing punctures in the field, and a spare silicone one-way valve flap.Weight: 480gSize: 183cm x 55cm x 5cmSize when rolled: 23cm x 10cm diameter181 air sprung cellsYou also get a free Sea to Summit Air Stream Pump Sack which can be inflated with a single breath, and within just two to three cycles your sleeping mat will be fully inflated and ready to go.There will be minimal breath condensation inside and you won't feel dizzy from blowing the mat up, and what's even better is that it can be used as a 20L dry sack to store your gear safely when on the move.Inflates most sleeping mats in only two or three breathsOval base designFully seam sealed with sealable valve plugMade from lightweight 15D UltraSil®Weight: 62g