Travel buddies set includes high quality 18" wheelie suitcase with matching 13" hard-shell back pack, Made from hard-shell abs (hard shell protection but light weight), Wheelie luggage offers a duel height retractable handle that can be adjusted to an adult height and child height for convenience; Also offers a hand carry handle, Back pack offers hand carry handle and child back straps, Wheelie weighs less than 5 pounds; Pack weighs 1.5 pounds