You will truly feel like Optimus when you transform from Autobot to the well-known semi-truck, in this Optimus Converting Costume! This costume includes 9 different pieces to make transforming possible! The first thing you do is put on the fully sublimated jumpsuit and matching gloves. Next, you add the poly combined to a foam-built-out semi-truck tunic. Then you add the poly combined to foam wheels that attach to your wrists and ankles with elastic straps. Lastly, put on the Optimus half mask with an adjustable strap and you are ready to transform! The costume is also a 3-in-1 costume and can be worn in converted truck mode, jumpsuit only, or with the jumpsuit and built-out tunic overlay on! Don't miss out on this amazing converting costume this Halloween! It will surely be a hit with your Transformers lover!