The Iron man boot to the Mark IV / VI suit. This is the heel to the boot, you will need to order three additional parts for a complete boot, (x1 Iron Man Boot Toe with sole and x2 of the Iron Man Boot joints). This version of the boot has a sole and will need some heavy reinforcement of the bottom if you're planning on walking on it. Designed to print at a thickness of .72mm, (minimum for Strong Flexible Plastic is .7mm). This saves on printing costs and WILL need some reinforcement on your end. Most people use fiberglass resin.