DermaRite Gauze Adhesive Dressing, White, Sterile, 2 x 3¾ inch, 1 Box of 50 Mat Platforms Stay Warm and Comfortable when Hip Kits Stay Warm and Comfortable when Driving on Cold Days * Heats the back and seat * Instant heat * Multiple settings push button hand control with 3 settings (High Low Heat On Of) * Pressure activated shuts off automatically when not in use * Designed for the car 12 Volt adaptor plugs into your car lighter socket * Durability and Comfort woven fabric and high density foam for comfort and durability * Thin design thin profile design fits all vehicles * Compare to the dietary ingredients is Phos Nak The second layer is super absorbent The third layer is a nonwoven tape with a strong adhesive to keep the dressing secure and maintain a moist environment