This costume includes an inflatable dinosaur costume, shoe covers, gloves, and a fan with a battery pack. One-size fits most. Fan requires four AA batteries (not included). This is an officially licensed Jurassic World costume. Officially licensed Jurassic world t-rex costume fits a 42 to 44-inch jacket size with up 34 to 36-inch waist Contains: Inflatable costume with battery operated fan and gloves Aa batteries required, not included Requires 4 aa batteries, not included Rubie's offers licensed character costumes and accessories in sizes and styles for the entire family