SOOTHE WITH ULTRAHEAT: UltraHeat technology penetrates deeply to help increase blood flow to sore areas for muscle relaxation and faster healing.SPECIALLY DESIGNED FOR ARTHRITIS SUFFERERS: King-size electric heating pad provides soothing heat therapy, and has an easy-slide controller specifically designed for arthritis sufferers.USE MOIST OR DRY HEAT: Large heating pad includes sponge so it can be used with moist or dry heat.CUSTOMIZE WITH 3 HEAT SETTINGS AND AUTO-OFF: Three heat settings so you can customize the intensity of heat, and 2-hour auto-off.COMFORTABLE TO USE AND EASY-CARE: Soft, washable cover.GENEROUSLY SIZED: King-sized pad measures 12