Worksox Heavy Duty, Graduated Compression DryStat Odor Resistant Socks TWS1000 Helps stimulate blood flow and recovery 75% Polypropilene DryStat, 15% Elastam Lycra, and 10% Polyamide Nylon Silver DryStat - Our exclusive technical fiber, wicks moisture away reducing blisters, prevents growth of bacteria and fungus reducing odors, Patented Graduated Compression, starting mid foot for additional arch and plantar fasciitis support, runs from 12mm to 20mm, performance compression Performance work tested, designed for being on your feet for long periods of time, ABX footbed provides additional padding without adding bulk Compression work socks, made in Italy using the latest technology and materials, compression experts since 1998, the best socks at any price.