2-in-1 Electric Heating Pad Snailax 17” x 33” heating pads for back stress relief are designed for versatile use. Simply fold and fasten it with buttons on the heat pad, it turns out to be an electric foot warmer. Heat therapy helps reduce muscle spasms, stiffness and pain in shoulders, back, neck, feet, knees, etc. increase blood flow, relax, and warm your body. 6 Heat Levels & Auto Shut Off Snailax foot warmer heating pad can warm up just in a few seconds, has 6 heat settings with an attached easy-to-operate digital backlit controller, and has temperature heat levels ranging from 95°F - 140°F. The feet heating pad has a built-in overheat protection thermostat and a 120-minute auto shut-off feature for safe use.