TMNT Ninja Turtles Boy 16" Backpack W/ Detachable Lunch Box & Bonus Sling Bag Backpack is made of an easy to clean and very durable polyester. Sling bag is made of non-woven material Includes one backpack with detachable heart shape lunch box plus a bonus Ninja Turtles sling bag Backpack features one large zippered compartment for binder, books and folders & two net side pockets for bottles Backpack with adjustable padded shoulder straps for additional comfort. Lunch box is easily strapped to the backpack Backpack dimensions: 16"H x 12"W x 5"D. Lunch Box is 8"H x 10"W x 2.5"D. Bonus Sling bag dimensions: 13.7"H x 11"W x .25"D