https://aka.re/3SY8T 1.The Posture Aid Support is designed to help pull the shoulders back and straighten the Spine 2.100% brand new and high quality,Retractable elastic strap 3.It makes you a elegant beauty no matter you are walking or standing,According to your own width of your shoulder,adjust the in the back to the tightness most suitable to yourself 4.Great for office persons,Supporting design helps correct poor posture SIZE: