Product description Size: M, L, XL Color: black Material: elastic mesh Package content: 1 * heating waist protector 1. ?Back pain relief? The lumbar support belt effectively relieves back pain caused by sciatica, scoliosis, herniated disc, degenerative disc disease, sprains, osteoporosis and loose ligaments. Also recommended for sports, heavy work and daily housework. 2. ?Arc-shaped aluminum strip, long-lasting support? The back of the lumbar belt is made of curved aluminum strips and fits the back perfectly. It provides enough lower back support to keep the waist straight, correct posture, and stabilize the spine 3. ?2 Detachable Automatic Heating Pads? No charging required, safe and automatic heating. The principle of heating is that far infrared rays absorb natural energy at room temperature and, after contact with human skin, resonate with water molecules to create a heating effect 4. ?Individual adjustability? Our back support can not only be adjusted to the size of the waist circumference. The outer strap is also used for individual pressure and support adjustment. 5.?Special Breathable Fabrics? :Lumbar Support Back Brace is made by breathable fabrics.When you wear it, you won't feel any sultry or uncomfortable. One-piece high-elastic fabric with durable Velcro provide wide compression for your lower back.Lower back support keeps your back straight to relieve pain.