4 piece costume. The head piece is pull on allowing child's entire face to be seen. The robot body has three holes. One for each arm on sides and on top for head. Velcro closure down entire back. Fits like a box would but very moveable material. The pants are pull on elastic waist and the shirt is pull on with Velcro closure at top (back of neck). The shirt is long sleeved with robot hands attached.