The best running socks are the ones that keep your feet dry inside your shoes. Balegas hidden comfort running socks use a proprietary blend of synthetics called drynamix to do just that. Drynamix encourages moisture wicking which speeds the evaporation process. Built in mesh zones enhance airflow even further. The hidden comfort socks are plush on the underside for a bit of cushioning and they have a reinforced toe and heel for durability. Hidden design hits below the ankle. Drynamix synthetic material breathes and wicks moisture elastane throughout knit for stretch and second skin fit. Reinforced heel and toe for durability. Mesh zones improve airflow and ventilation. Plush underside for extra comfort. Heel tab prevents sock from slipping down into shoe. All of Balega running socks have been race tested and incorporate a hand linked seamless toe, eliminating abrasion across the top of the foot. The company also Knits an extra deep heel pocket ensuring that each sock fits the foot perfectly and does not slide down during a run. Designed with a medium volume construction. Drynamix polyester 80%/nylon 18%/elastane 2%.