This backpack is suitable for overnight trips such as forest schools, school trips, training camps, and camping. The width of the backpack can be expanded with the zippers on both sides for extra storage. 58L size. Purchased over 5 years ago for around 4000 (yen), used twice. There is a name written on the inside, which has been blacked out with a black pen. See photos. Approximate dimensions: 55cm wide at the bottom, 22cm deep. Approximately 40cm high at the back.