Breathable fabric with good elasticity Adjustable perfect fit Easy to wear under any clothes Fits snugly on your waist without discomfort Forget about pain Fits snugly on your waist without discomfort Product Description Size: XL: Waist circumference: 97-110cm Color: black and red Material: elastic mesh Main Material: Straps: 4 aluminum strips (not removable) Fabric: Elastic mesh surface keeps warm and comfortable Seal: 2 front and back waist and abdominal heating pads Function: Support, decompression, posture correction, waist and abdominal fever Package Contents: 1 * Back support belt for Relieves pain 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 removable 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 resonate with water molecules after contacting human skin to produce a heating effect 4. Individual adjustability: Our back support can be adjusted not only to the size of the waist circumference . The outer strap is also used for individual pressure and support adjustment. 5. Special breathable fabrics: The back support with lumbar support is made of breathable fabrics. When you wear them, you won't feel sultry or uncomfortable. The lower back support keeps your back straight to relieve pain.