Unused item. The attached strap for the back is not included. I think it's a strap for use like a dog leash, so it's probably unnecessary for children who are in kindergarten or older. It can be used as a regular backpack. This is an authentic product purchased from an authorized retailer. A backpack of Sally, a LINE FRIENDS character. There is a slight discoloration on the name tag holder in photo 9. There is a small stain on the backpack strap in photo 13. Width: 23 cm, Height: 25 cm Backpack strap: Max 60 cm, Min 30 cm I am selling this unused item because I haven't had a chance to use it after purchase. Please understand that this is a used item before purchasing. - Color: Yellow - Material: Fluffy fabric - Features: Round shape - Straps: Adjustable Thank you for viewing.