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 no sole and x2 of the Iron Man Boot joints). This version of the boot has no bottom so you can wear your normal shoes underneath, using it as a cover. 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.