Thank you for viewing. This is a shoulder-style book bag. It can also be used as a lesson bag or a change-of-clothes bag. 【Size】 Height 29.5cm x Width 37cm x Depth 3.5cm (Slight variations may occur) The shoulder strap can be adjusted up to 80cm in length. It cannot be removed. Easy to hang on hooks on desks or in hallways. 【Materials】 Quilting Acrylic tape Adjuster Velcro Although it has not been used since purchase, we are looking forward to your purchase if you understand that it has been stored at home by a private individual.