【Inflate Easy and Quickly】No pump required,just open the couch pocket under high wind conditions and run straight against the wind to catch air or lift 2-3times.if you are at home or under small wind,use a fan to inflate or run a few step to catch air.Closing the pocket quickly and Rolling up as tightly as possible until no longer able to roll when the air full of the couch,Need some skill and patience to lock the air 【Advanced Anti-Leak and Tear-Resistant Technology】The air chair made of two layers of bags,outer bag is made of high-density waterproof 210T ripstop nylon,inner bag is made of high-quality polyester fiber and high-strength PE material,Double insurance insure your confidence 【Light Carry,Easy Expand and Strong Support】The folded size of the AiR chair is 17"x11"x3.