The Sidi Glacies is crafted for those who dare to master icy trails. Engineered to dominate winter these shoes feature Gore-Tex PFC free membrane waterproofing and Gore superior thermal fleeced insulation. Designed for natural wear the quick lace closure system surrounds the foot for a personalized fit preventing any excess of stifness. Grip any terrain with its unique rubber carbon sole with a stifness index of 5.