Performance in a sock: Under Armour Men’s Armourdry No Show Socks are Under Armour’s fastest drying socks; made with Armourdry yarn technology to absorb less sweat and evaporate more moisture for a light, dry run. By wicking sweat and absorbing less moisture, these socks also help to combat blisters. These socks improve the performance of your running shoes by keeping your feet drier, lighter, and cooler. Breathable mesh ventilation channels on the top and bottom of your foot where you need it most promotes airflow and anti-odour technology helps prevent odour in the sock. Cushioning in high impact areas reduces bulk and delivers flexibility, while dynamic arch support helps reduce foot fatigue. The fitted heel contours around your foot for a better fit with Left / Right specific design. Stay visible with reflective details for low-light runs.