You run just fine in traditional socks, or at least you think so but when you run in Injinji Men's Run Technique Crew Socks, you'll understand that your toes have never been so happy. This sock allows them to expand to their natural size. when your foot takes on your weight, which in turn Allows the entire foot to effectively step. Moisture-wicking materials with mesh insert at the instep wick sweat away from the foot and promote air circulation , reducing chafing that leads to blistering and allowing you to complete your run in comfort.