If your son is a fan of the Transformers, then the Transformers Optimus Prime Classic Boy's Costume is a great costume idea for Halloween. It comes with a red, blue, and silver jumpsuit with machinery detail print and a matching character mask that features the iconic faceplate and ear finials. There is no greater achievement than being the leader of the Autobots. Fight off Megatron and the villainous Decepticons faction when you wear this costume. Prime has dedicated himself to protecting all factions of life, especially the inhabitants of Earth. In the live-action films, Optimus Prime is able to transform into a Peterbilt 379 cab in order to disguise himself. You can add Optimus Prime gloves as well as a toy weapon to complete the look. With this costume you son will be able to pretend to fight the Decepticons and restore world order.