The Thermorelief Moist Heat Digital Medical Grade Heating Pad is a high-quality medical-grade heating pad with auto shut off. The safe, infrared heat, the same soothing heat from sunshine provides users maximum benefit for soothing moist heat applications. The Thermorelief Moist Heat Digital Medical Grade Heating Pad provides soothing moist heat, which is recommended by medical professionals such as doctors, chiropractors, and physical therapists. Studies have shown that moist heat has greater benefits than dry heat for relieving pain and muscle tension. The moist heat pad helps the heat get through the skin barrier and deeper into the tissue beneath, which helps to increase circulation to problem areas, bringing in new blood cells while taking away wastes to speed up recovery. When heated, the soft flannel covering draws in moisture and humidity from the air and retains it, then transfers it through a process called fomentation. Clothing and skin do not become saturated due to water being held against them. The digital controller allows users to adjust the temperature to 113, 130, 150, or 167 degrees, and the auto-shutoff time control at 15, 30, 45, and 60-minute intervals. This heating pad is ideal for relieving chronic pain or temporary conditions such as menstrual cramps and injuries to your back, shoulders, neck, knees, and arms. The safe, infrared heat (the same soothing heat from sunshine), medical-grade digital electric pad is heavy and durable for many, many uses. The plush flannel covering is made for ultimate comfort and is water-resistant and washable. The Velcro strap allows users to hold it securely in the exact place that it is needed. The Thermorelief Digital Medical Grade Heating Pad is available in 2 sizes. The Thermorelief Moist Heat Digital Medical Grade Heating Pad King size measures 27 inches wide, 14 inches long, and is great for back or spine relief. Thermorelief Moist Heat Digital Medical Grade Heating Pad Medium size measures 18 inches wide, 14 inches long, and is the perfect size for use on arms, shoulders, and elbows. Thermorelief Moist Heat Digital Medical Grade Heating Pad Specifications: Choose Size: Medium or King. King size: Measures 27 inches wide, 14 inches long, weighs 3.175 pounds. Medium size: Measures 18 inches wide, 14 inches long, weighs 2.3625 pounds. Controller: Digital controller allows users to adjust the temperature to 113, 130, 150, or 167 degrees, with auto shutoff time control at 15, 30, 45, and 60-minute intervals. Cover: Plush flannel covering with Velcro strap, water-resistant and washable.