When you slip on the On Performance Mid Sock, you know you’re about to have a good run. These running socks hug your arches for extra comfort to keep you going. Plus, technical mesh paneling keeps your feet cool when things heat up, yet they are warm enough that you won’t get cold feet before a chilly morning run. Features: The pattern at the arch triggers sensory receptors to prime your feet for the run. Swiss engineering keeps the socks firmly in place to prevent them from slipping Made using 100% recycled polyester, technical mesh paneling keeps the temperature in perfect balance.