Back on Track® Royal Protection Bell Boots, have an outer shell manufactured from a composite reinforced with a Kevlar-like material, which is lined with the revolutionary Welltex® ceramic infused fabric, providing soothing, pain relieving FAR infrared therapy. The material distributes the force of a stroke, while the strengthening helps to stop a horseshoe from crushing the boot and injuring the horse. Plus, they have a special elevation inside, which fits into the horses’ pastern to prevent the boot from twisting around.