Pure Relief XL offers king-size comfort to the sore muscles in your back, legs, arms, and more. Made with plush microfibers, this deluxe heating pad provides an ultra-soft heat therapy solution for arthritic pain, muscle ache, and stiff joints. Use for just 20 minutes daily or as recommended by your doctor to increase blood flow and reduce pain and muscle spasms. Pure Relief XL heats in seconds to provide fast pain relief to aching muscles and can be safely used for moist or dry heat therapy. Pure Relief XL King Size Heating Pad has an extra-long 9-foot cord that makes it easier to use from the comfort of your bed or favorite chair. Model PEHT24RT-G.