①. Product Description ②. 【Relieve lower back pain】 The back support is four times harder than the usual PP band, and has 2 steel springs along the waist. It can 360° provide stronger vertical support for the lower back, prevent excessive muscle rolling and reduce pressure on the intervertebral discs. ③. 【Under Clothes. Wear】 The back support is made of 4 - way stretch elastic material with 3D knitting technology, in different compression levels, offering good fit, breathability and comfort. The inner layer is made of velvet fabric, which provides a silky touch similar to baby skin and is suitable for wearing inside. ④. 【Prevent Back Injury】 Designed with 2 elastic straps, this back support provides extra pressure around the waist to help prevent back injuries caused by lifting weights, standing or sitting for long periods, doing housework, working, etc. It can relieve lumbar muscle pain, herniated disc, sciatica and scoliosis while wearing the brace. ⑤. 【Intimate detailed design】 There are 2 silicone non - slip straps on both sides of the waist to prevent the waist support belt from rolling up when sitting, bending over or doing other activities. It has a 1.5*3.7 wide Velcro sticker. The 2 elastic bands provide a strong grip. Made of PVC material, which is widely used in baby clothes, it won't scratch your skin or damage your clothes.