Vbiger Girl's & Boy's Backpack for Middle School Cute Bookbag Outdoor Daypack (Black 3) Material: Nylon fabric Size: 17.2"x11.3"x4.8" (Height x Length x Thickness). Application: travelling, hiking, school bag, shopping, placing laptop, ipad etc Attribute: living waterproof, durable, adjustable shoulder straps Cool book bags for girls and boys