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