Nike Unisex Mens Womens Volt Black Anti Blister Reduces Friction Running Socks (X-Large) Lightweight construction brings a snug fit with less bulk Ventilated mesh for lightweight breathability Dri-Fit fabric pulls away sweat to help keep you cool and comfortable Left/Right specific design for a better fit Low-Friction Construction Reduces Abrasion Over the Forefoot, Heel and Toes