Description Origin: Mainland China Effect: Bone Care Item Type: Braces Supports Model Number: Back Lumbar Support Belt Number of Pieces: One Unit Material: Composite Material Application: Back Features: Relieve lower back pain. The back brace contains 4 memory-aluminum stays that are quadruple harder than commonly used PP strips and 2 steel springs placed along the waist side, offering 360-degree stronger vertical support to the lower back, helping prevent excessive muscle rolling and reduce pressure on discs. Can be worn under clothes. The back support is made of 4-way stretch elastic material with 3D knitting technology and varying compression levels for superior fit, breathability, and comfort. The inner layer is made of velvet fabric, providing a soft, smooth touch suitable for wearing under clothing. Helps prevent back injuries. The back support features 2 elastic straps designed to add extra compression around the lower back to help prevent injuries during weight lifting, prolonged standing or sitting, housework, or work-related activities. May help relieve discomfort associated with strained waist muscles, disc herniation, sciatica, and scoliosis when wearing the back belt. Thoughtful design details. Two silicone anti-skid bands are located on both sides of the waist to help prevent the support belt from rolling up during sitting, bending, or other movements. The wide hook and loop fastener on the two elastic straps provides strong adhesion. Made from PVC material, it is designed not to scratch skin or damage clothing. Durable construction. The waist support features double ing, with strict quality control, ensuring long-lasting durability. Size: Measure waist at the level of your navel. S: Fits waist 60-75cm / 23.6-29.5 inches M: Fits waist 75-85cm / 29.5-33.5 inches L: Fits waist 95-115cm / 37.4-45.3 inches XL: Fits waist 115-125cm / 45.3-49.2 inches XXL: Fits waist 125-140cm / 49.2-55.1 inches