Anatomically designed cycling socks with Far InfraRed technology for cold weather conditions. Sole made of extra warm fabric equipped with Far InfraRed technology for extra insulation. Far InfraRed (FIR) technology keeps feet and toes warm and exceptionally comfortable by improving bodyÂ’s metabolism and microcirculation. Seamless toe construction. Open structure on top of the sock allow excessive moisture to evaporate easily. Flexible bending ankle area. Prevents folds where the sock is curved.