The heart of these Axial D1 racing boots is the inner shaft featuring Axial Distortion Control System technology, an articulated structure that acts like an ankle support.This guides the joint and prevents incorrect movements, which can lead to sprains or fractures. The internal structure is composed of carbon and aramid fiber, lightweight and extremely resistant.These lightweight boots provide a high level of protection in the event of a fall.Safety and extreme performance are also guaranteed by a lightweight, hard-wearing magnesium slider, metal protection on the heel and a nylon counter to absorb impact and reduce trauma to the back of the foot.