This Optimus Prime costume is a 3D costume and a fantastic choice for kids this Halloween season! The costume consists of a screen-printed jumpsuit that is 100% polyester and velcros at the back of the neck for closure. It features foam, 3D body armor over the chest, shoulders, wrists and ankles that is also screen printed. Complete your transformation with the included Optimus Prime mask. The blue and grey mask is made of plastic and has slits for easy seeing and breathing. It is secured in place with an elastic band. Show Megatron your strength in this officially licensed costume!