Easy comfort switch - our most popular switch design. It gives the user the most control over the temperature of the pad. Squeeze it to heat and release to cool down. Fleece cover with Moist-Sure technology enhances heat penetration. You don't even need to add water for effective moist heat that reaches deep into the source of your pain. Large 14"x27" size covers the entire back, abdomen or hip and thigh. Flexible weighted construction drapes to body contours to assure uniform contact with painful areas. What is the secret behind the unique ability of our Thermophore therapy system to provide real relief from chronic pain? We have spent 80 years fine-tuning each element of our Deep-Heat therapy system, so that each component enhances the others creating the best heat therapy possible. No other heat therapy product has been proven to be more effective than the Thermophore Deep-Heat therapy system at relieving pain. Its hand-crafted design delivers a unique combination of heat moisture and weight that contours to your body and delivers intense moist heat that pushes deep into painful tissues and joints. In minutes, muscles begin to relax, circulation increases, even chronic arthritis pain subsides and the relief lasts for hours. Thermophore Deep-Heat therapy packs are capable of reaching the most intense heat levels allowed. No generic hi/med/low settings, our Easy-Comfort switch immediately responds for customized therapy and absolute control of pain management. Self-contouring design combines the flexibility of rugged fabric with evenly distributed weights to maximize heat transfer for soothing all-over comfort. Moist-Sure technology in our plush fleece cover absorbs atmospheric moisture to enhance the penetrating heat of the Thermophore pack for more effective therapy. No chemicals, messy creams or concerns about side-effects. Use as often as needed to take control of pain before it intensifies and begins to control you.