Vitalsox Run and Fun Low Cut Italian Plantar Compression Performance socks, VT0210 SILVER DRYSTAT infused with Silver, Polypropylene (naturally bacteria resistant, 100% recyclable) Odor caused when bacteria contacts sweat, by stopping bacteria from growing and wicking moisture the socks will remain odor free, your feet may still smell. ARCH, PLANTAR, HEEL CUP SUPPORT ZONES- extra support bands for your whole foot with deep heel cup and flat toe seam, every part of your foot is supported without pinching or cutting off your circulation, helps prevent injuries caused by lack of support. SIZE CHART: Small (Women's 5-8, Men's 4-7), Medium (Women's 8-10, Men's 7-9), Large (Women's 10-12, Men's 9-11), X-Large (Men's 11-14). Due to the stretchability of the sock, For more support choose one size down. USA FDA Registered (REG#3011496736) 4 WAY STRETCH- Most socks are 2 Way Stretch. our socks stretch both directions for consistent compression throughout the entire sock. EACH PAIR is WASHED in a "chemical free" fabric softener fresh scent making our socks "Ready to Wear" right now. 100% MADE IN ITALY- SINCE 1998 Made from start to finish in our own factory never outsourced to the lowest bidder or built using machines designed for other products with inferior non tested materials. performance does make a difference GUARANTEED