It is a shoulder strap that can be used in 2 ways by attaching it to a root tote with a metal fitting for the shoulder. It is about 4 cm wide with a moderate thickness that is not too thick and not too thin. The length can be adjusted with an adjuster. Just by putting it on, the tote bag turns into a shoulder bag! Even a simple bag is an excellent one that can be transformed into an active bag at once with this strap.