Product details of Multipurpose Electric Heating Pad For Joint Pain Relief Ideal For Back, Shoulder & Knee Pain Adjustable Heating Levels Safe Use 3 level temperature setting- Low, Medium & High. In-built twin thermostat for accurate temperature control. Four layers of insulation on either side for safety and proper heat distribution. With cover and belt for hand free operation Ultra soft, washable cotton cover for user comfort Can be used on any afflicted area- back, knee, shoulder, elbow, calf etc 3 level temperature setting- Low, Medium & High. In-built twin thermostat for accurate temperature control. Four layers of insulation on either side for safety and proper heat distribution. With cover and belt for hand free operation Ultra soft, washable cotton cover for user comfort Can be used on any afflicted area- back, knee, shoulder, elbow, calf etc