This is a saxophone strap by Marmaduke. It has a core material inside, and you use it by conforming (shaping) it to your shoulder. I'm selling it because it didn't fit me. Unlike general straps that hang around the neck, this is a shoulder-supporting type of saxophone strap. It supports about 80% of the saxophone's weight with both shoulders, significantly reducing the burden on the neck. The left and right bars can be bent to fit the player's body shape (shoulders), allowing you to adjust them to the perfect angle. (※Please note that bending the aluminum bars repeatedly may cause the metal to deteriorate and break.) Also, the length of each string can be adjusted, and you can secure it at the perfect length with the fasteners. Please understand that this item has been stored at home, and returns are not accepted.