As the boot of choice for defending AMA Superbike champ Josh Hayes, the R-S2 is developed to counteract excessive ankle torsion while still retaining natural motion for the foot. Carbon fiber components reduce weight while increasing structural support and improving impact resistance. Other features include polyurethane shin plats with mesh air intakes and a polyurethane shift pad integrated into the sole. This boot also comes with a gel insert at the heel to deaden impact.