Sizes: M, L, XL Color: Black and Red Material: Elastic Mesh Package Contents: 1 * Heated Waist Protector Relieves Back Pain: The lumbar belt effectively alleviates back pain caused by sciatica, scoliosis, herniated discs, degenerative disc disease, sprains, osteoporosis, and loose ligaments. Also recommended for sports, heavy work, and daily household chores. Curved Aluminum Strip for Long-Lasting Support: The back of the lumbar belt features curved aluminum strips that perfectly contour to your back, providing ample support to keep your waist straight, maintain correct posture, and stabilize your spine. 2 Detachable Automatic Heating Pads: No charging required, safe and automatic heating. The principle of heating involves far-infrared rays absorbing natural energy at room temperature, which then resonates with water molecules upon contact with human skin to create a warming effect. Individually Adjustable: Our back support can be adjusted not only to your waist size but also features an outer strap for personalized pressure and support adjustment. Breathable Special Fabrics: The lumbar support is made from breathable fabrics, ensuring you won't feel stuffy or uncomfortable. The highly elastic one-piece fabric with durable Velcro provides broad compression for your lower back, keeping your back straight to relieve pain.