Internal structure of the caterpillar costume. The legs are made with the same pool noodle that is visible, just cut into smaller sections. The hoops are wooden embroidery hoops. Each leg had a fabric sleeve that went over the top - open on the bottom, just like a pant leg. There was a small opening in the seam on the inside so that it could be slipped up over the pool noodle and would cover the dowel that connects to the structure.