Polypropylene yarns for superior moisture wicking and to provide bacteria/odor resistance Arch support for better fit and increased circulation Double welt top for better stay up performance Full cushion foot for shock absorbency 55% Polypropylene, 45% Stretch Nylon Ankle support promotes stability ProFeet Performance Multi-Sport Over the Calf Socks, Large, Navy MS1087262 MS1087262 42589072825