For Randoseru (school backpacks) This is a used item. It was only opened and used once. - Color: Black Used to reduce the burden on the shoulders. It has a non-slip finish and is designed to prevent slipping off the shoulders. Suitable for randoseru, children's backpacks, mini bags, and other bags that tend to put a strain on the shoulders. Easy to attach, it is used by wrapping it around the existing shoulder straps. Thank you for looking.