Tailored to fit your ski boot. The insulating, thermo-regulating Alpine Sock will keep your feet warm and dry. Elasticated, for a perfect fit, and to minimise the risk of blisters, and with a high calf to prevent blisters due to rubbing against the boot. • Extra protection at instep, and comfortable knitted calf. • Anatomically shaped for left and right foot. • Y-heel for optimum fit. • Reinforced toe and heel for extra wearing strength.