adidas Traxion Tennis Crew Socks Socks Black/Shock Red : adidas Traxion Tennis Crew socks are named for the Traxion(TM) Heel that helps reduce slipping to ensure more sure-footed performance on the court. Compressive yarns run throughout the entire sock, providing high-performance support. Coordinate a complete look with your favorite color. Left/Right specific fit offers a more anatomical fit. Built with targeted cushion zones.