The Lil B is a super-mini backpack. Sized for the pre-school set, to comfortably hold a pint-sized lunch. But with its extendable straps, the Lil' B also makes a killer tiny pack for 'tween and not-so-tween things (phone, wallet, keys).Certified organic cotton, preshrunk and fully machine washable. Rinsable, tested food-safe lining. Extendable cotton canvas backpack straps and zipper closure. Organic cotton and polyester. Machine wash warm, air dry. Measures 10 x 6.5 x 4 in.