Come and see our amazing products. Opens shoulders and straightens back to provide effective posture correction that improves confidence and relieves pain;Comfortable Support: Soft shoulder straps reduce friction,correcting your posture and straightening your back without digging into skin; M for waist sizes of 23-28 inches, L for waist sizes of 27-36 inches and XL for waist sizes of 35-50 inches; Simply put on the posture corrector like a backpack,fasten the waist belt, pull the elastic straps, and attach them to the waist belt;Great for work, home, or light exercise;start improving your posture today with the Posture Corrector for men and women Pls confirm with us about the packing info, stock color and exact production time before placing your order.