Tennis socks
Tennis shoes get most of the publicity, but serious players know that the socks inside those shoes can affect performance and prevent injuries. Socks designed specifically for tennis players are thick or double-layered, with extra padding for the toe and heel. Some socks are so thick and cushioned that you might have to buy shoes a half-size larger than usual. The materials to look for in tennis socks, in the order of how well they repel sweat and expose it to air for quick evaporation, are Coolmax, acrylic, polypropylene, and wool. Remember: No cotton socks for tennis. Not only are they poor in wicking moisture away from the foot, but they also lose their shape, bunch up, and quickly become abrasive.
Tennis: Steps to Success Jim Brown,Camille Soulier