Relieve lower back and hip joint pain. Self heating tourmalines and Gaussian magnets promote blood circulation, metabolism, and alleviate pain. Dual adjustable straps for a customized fit. Allows for all-round movement and comfortable support. Suitable for walking, working, resting, bending or stretching. Size: M, L, XL, XXL. Features 1. Enable men and women to immediately and persistently relieve lower back and hip joint pain from disc herniation, sciatica, back pain, muscle soreness, and other back diseases. 2. Self heating tourmalines and Gaussian magnets help maintain body heat, improve blood circulation, promote metabolism, and restore and alleviate pain. 3. Dual adjustable straps provide a customized fit and perfect fit design, making it comfortable and easy to wear under any clothing. 4. Allow for all-round movement while providing comfortable support. Wear it when walking, working, resting, bending or stretching. Enjoy freedom of movement. 5. Tomaline self heating, magnetic drop plastic, mild hot compress, Tomaline's own energy release, hot compress therapy for damaged areas of the lumbar spine, and alleviate discomfort in the waist. Specification Material: Plastic Cement Color: Black, White Belt Size: M, L, XL, XXL Size: 18 x 20 x 1 cm Weight: 155 g Package Include: 1x Magnetic Therapy Heating Strip