AA Battery Powered Infrared Carbon Fiber Heated Stadium Seat Cushion Durable construction, water and scratch resistant, 14" x 14" x 2.5" size Uses 4 AA Batteries (not included), last for 4-5 hours Great for football games, tailgating, camping, fishing and ski trips ONLY GETS WARM, you only feel the warmths when you sit on it as you will be trapping the warmth. 5 Watts, 6 Volts, Carbon Fiber Heating Element with on/off switch