Ruggedly designed with welded seams and durable dual air valves, the Exped Airmat 7.5 mattress is an affordable air mattress that wont add excess weight to your summer climbing and backpacking packload. This single-chamber design features dual welded valves on the ends of the mattress instead of the corners to minimize wear and damage. The dark, polyester cover resists abrasion and UV penetration and dries quickly when exposed to sunlight. When youre ready to go, the Exped Airmat 7.5 mattress deflates quickly and conveniently into a small 8 x 4 in. package that you can attach to an external daisy chain or slip inside a pouch in your mountaineering or expedition backpack.