This costume includes a headpiece, jumpsuit, shoe covers, and stuffable tail. This is an officially licensed Universal Jurassic Remind everyone just who once ruled the Earth with the Jurassic World ? Adult T. Rex Costume. If you love dinosaurs and are a Jurassic World fan, then this is the costume you've been waiting for you. You've finally got the chance to step into the roles of one of the biggest and baddest Dinosaurs of all time, the Tyrannosaurus Rex. This product includes the T Rex character headpiece, jumpsuit with realistic scales and texturing, as well as shoe coverings and stuffable tail. Get ready to fight the Indominus Rex and prove who's really in charge this Halloween. Jurassic World Adult T. Rex Costume