The 1000 Mile Fusion Anklet Sock combines comfort and protection with the 1000 Mile Double Layer System for reduced friction and blister protection. It features extended padded zones for Achilles tendon protection around the ankle, and re-shaped padding on the toe and ball of foot areas for increased comfort. Ventilation zones on the top of the foot enhance breathability, keeping feet cool. This sock is knitted to an ankle length for those who prefer a shorter sock. Features: NEW Ventilation zones for added breathability, Padded Achilles tendon protection, Arch bracing for additional support and custom fit, Padded zones on toe and ball of foot.