Our 2-piece kids carry-on luggage set includes an 18" ride-on hardshell suitcase and a 12" backpack, and they only weigh 5.5 lbs, which are suitable for kids to enjoy a vacation, go to school, attend summer camp, go out for a picnic, and more. The hardshell suitcase comes with inside cross straps and a zippered storage pocket to store books, clothes, toys, snacks, toiletries, etc.