The Thor Mighty Avenger 16" Rolling Backpack is ideal for children in school and for overnight stays. This 100 percent polyester case with a top handle is light and easy to roll. It can be maneuvered by children or by adults with ease. This polyester backpack is durable and can be used to hold books or clothing. It is also an excellent carry-on case for travel. The Thor backpack has multiple compartments and padded back straps that help to cushion it when it is worn on the back. A large, single-zipper opening makes it easy to open and close