Back support doesn't have to be a one-size-fits-all, this waistcoat has two fully adjustable shoulder straps so you can customize your fit and compression. Make it tighter or looser for a perfect fit. The strap keeps the strap secure. This posture support focuses on providing complete back support, effective support, and powerful support to relieve back, neck and shoulder pain due to bad posture. In addition, the strap can be adjusted to support the upper and lower back for easy wear. Prevents gradual curvature of the spine and reduces compensation for scoliosis. The shoulders are rounded and/or folded, and the posture correction tape helps provide additional support. Our products will bring convenience to your life and let you experience the joy of life while using.