Disguise Transformers 3 Dark Of The Moon Movie-Optimus Prime 3D Theatrical W/Vacuform Our Theatrical adult Optimus Prime costume includes a jumpsuit, helmet, chest armor & cod piece. The included gauntlets with attached weapon complete this impressive adult Optimus Prime costume. The adult Optimus Prime costume comes in adult size X-Large. The helmet with this adult Optimus Prime costume features light-up eyes. This adult Optimus Prime costume is an officially licensed Transformers costume.