Ben 10 Ten Alien Force Large Backpack Bag Lunchbox Lunch Bag Backpack measures around 15" x 11" x 4". Main double zippered compartment with 2 side pockets for bottle. Adjustable padded straps. Lunchbox measures 10x8". Double zips. Made of canvas material. Velcro straps on backpack that link lunch bag together. Detactable.