Compressprint Compression Nylon Socks For Cycling Sporting Running Gym With Best Recovery Performance Material: 80 Percent Nylon and 20 Percent Spandex Our Socks Superiority: With Good Compression For Relieve Leg Pressure US Sizing Guide-Women Foot Length :22.5-24.5 centimeter ,Shoe: 5-7 US Sizing Guide -Men Foot Length :24.5-26.5 centimeter ,Shoe :7-9 Washing Method Machine Wash/Hand Wash Cold Separately