This 36 x 16-inch insulated rubber Foot Warmer Mat will keep one's feet warm, even in the dampest, coldest indoor work area. It can also serve as an overnight boot and sock dryer. Among its features: radiant heat reaching 130 degrees within 30 minutes, no fans/blowers, safety switch that prevents overheating, draws less power than a 150-watt light bulb, fully sealed, waterproof, and portable. Optional high-low power switch available.