Thank you for viewing. I purchased this at Kojitsu Sanso and used it several times for mountain climbing, after which it was stored at home. This item was used by a child, so please understand that it is a used item. There is a name written on it, which will be covered up before delivery. This stylish kids' backpack, worthy of adults, is from "MAMMUT," an authentic mountaineering equipment manufacturer originating in Switzerland. The 18L size is perfect for elementary school students in the lower to middle grades. It can neatly store lunch boxes, water bottles, and A4 notebooks!! It's also recommended as a bag for extracurricular activities. For peace of mind and safety, it comes with a name tag and reflectors. Furthermore, it has a chest belt, which is essential for children, to prevent it from slipping off. The belt position can be adjusted up and down. Also, a security whistle is included for emergencies! The back and shoulder straps have cushioned padding and breathable mesh material. It provides a comfortable carrying experience even when moving actively. Features include a hydration system, trekking pole carrying, and a waist belt, all with authentic functionality. ■Size: Approximately W30 x H56 x D28 (cm) ■Capacity: Approximately 18L Mammut MAMMUT First Trion 2510-03110 0575 black-inferno 18L [Kids' Bag] Travel, forest school, summer camp, summer school, overnight childcare