The New Episode It was our favorite time of the week. Well, now with this Adult Transformers Optimus Prime Converting Costume, that childhood dream is becoming an adult reality! The outfit is officially licensed from Transformers, so you'll be ready to command the Autobots once you slip into it. Fun Details This adult costume means business! It comes with everything you need to look just like Optimus Prime. It starts with a spandex blend jumpsuit, which has highly detailed printing on the exterior. It has a fastener in the back to help get a secure fit. The large cab piece, which is designed to make your chest look like a semi-truck, is made out of foam and fits over your chest. The matching wrist cuffs and boot covers come with amazing touches, like faux tires and the sides and bright printing. The boot covers have an elastic strap on them, so you can fit them over any pair of shoes. To top it all off, the mask is molded into the shape of Optimus Prime's face. And the best part about this costume is that you can convert from semi-truck mode to robot mode in just a few seconds! It's the easiest way for any adult Transformer fan to become their favorite character!