The Repose Mattress Overlay is simple to use, quick to inflate & yet very comfortable & an effective means of preventing pressure ulcers. Supplied with a reliable hand pump, it is made from elastic urethane membranes that allow water vapour to escape & which provide very effective pressure distribution. The result is lasting user comfort in a single, easily portable package. The overlay is equipped with a fastening strap that keeps it firmly in place on either double or single beds. Latex free Easy to clean Inflates in seconds