• To inflate the mat you simply open the valves at the top of the air pad and the air begins to get sucked into the pad. When it is inflated you just close the valves. These are made from polyurethane open cell foam. Alps has a video explaining how the pads work that you can view here if you would like. http://www.youtube.com/watch?v=t67Pprcp0Jg
    Answered on 4/29/2014 6:08:17 PM by Product Specialist Greg from Sierra Trading Post