The 1000 Mile Fusion Anklet Sock combines comfort and protection with the 1000 Mile Double Layer System for reduced friction and blister protection. The padded zone on the heel has been extended around the ankle, and the padding on the toe and ball of foot areas has been re-shaped for enhanced comfort. Ventilation zones on the top of the foot increase breathability, keeping feet cool during wear. This sock is knitted to an ankle length. Features: NEW Ventilation zones for added breathability, Padded Achilles tendon protection, Arch bracing for additional support and custom fit, Padded.