My husband bought wrong size for my son and couldn't return. Worn once. The TRUsox® 3.0 Mid-Calf Crew grip socks are the most popular product in the range. TRUsox® patented IN//EX tech™ on both the internal and external surfaces of the sock, simultaneously grips to your foot and footwear, eliminating any points of slippage. Improved stability and security in your footwear allows you to maximize transfer of energy as you change direction, accelerate and decelerate, maximizing your performance.