Material:Made of waterproof fabric,not only lightweight and durable,but also breathable and storage.Size: 31cm/12.2"(L) x 15cm/5.9"(W) x42cm/16.5"(H).Perfect Capacity:The backpack is reliable, well built, classically designed and the construction is great. The backpak inside have two compartments could hold your daily school's textbooks, notebooks, binders etc,and 2 quick-access wall pockets for your pens, passport, phone, keys,an inside zipper pocket can put confidential stuffs; A front zipper pocket can put your cell phone and small stuffs easily; two side pockets can place your cell phone, thermos cup, umbrella, etc.Features:The strap with sponge is comfortable and safe and adjustable , and there is enough storage space to meet the needs of children.Multifunctional:Eye-catching colors patterns, simple backpack for school,outdoor or traveling.(Not for children under Age 5-9yrs.)