[Choose Your Size] ?S: Fits Your Waist Size: 68CM-90CM?; ? M: Fits Your Waist Size:90CM-110CM?; ?L: Fits Your Waist Size: 110CM-135CM?; ?XXL: Fits Your Waist Size:135CM-170CM?. [Maximum Stability] 2 Silicone anti-skid bands are designed on the 2 sides of the waist,preventing back support from riding up when sitting, bending or doing daily activities.The wide size Touch Fasteners of 2 elastic straps provide maximum stability far beyond your expectations, made of PVC material that usually used for babies clothes,will not scratch your skin or damage your clothes. [Strongest Extra support] Back support brace elastic straps is designed 4 times stronger stretch yarn which easily add extra compression around back, lower back pain relief for men and women while heavy lifting,long time standing or sitting,playing golf,doing housework,gardening,working,etc. [Most Breathable Air Mesh] The Air-Mesh channels of the brace provide comfort for all-day wear even the toughest work.This back support is made of 4-way stretch tech, which is lightweight and bring you an ultimate baby-skin-like silky touch when wear it under the cloths, perfect for back surgery to restore. [Take Pain Away Immediately] FREETOO back support belt contain 4 Memory-Aluminum stays which is 4X supportive than PP,and 2 steel springs placed along the waist side,providing 360° stronger support to lower back,and relieving back pain caused by arthritis,disc herniation,sciatica,spinal stenosis,scoliosis,and ankylosing spondylitis,etc.