Fox River Military Wick Dry Maximum Mid Calf Boot Sock 70% Polypropylene, 28% Nylon, 2% Spandex BEST MILITARY SOCK ON THE MARKET: Medium-weight FoxSox take all your duty can dish out; extra cushioning softens the blows your feet take every day, quick-dry fibers make washing a simple task, superb fit minimizes bunching and blistering KEEP ODORS AT BAY: Scentry helps permanently defend your socks from odor; natural and man-made agents make this technology a sure way to be confident about sock odor, embedded fiber like silver or copper or with a micropolymer silane technology which slows wear and reduces odor in the sock CUSTOM FIT: URfit System provides the ultimate personalized response fit combining memory knit compression, a contoured rib top and spandex compression zones STAY DRY WITH WICK DRY: Our exclusive technology quickly draws moisture away from your skin so your feet stay dry and comfortable; removes any moisture build up which reduces hot spots and friction that causes blisters BACKED BY COMPANY STANDARDS OF EXCELLENCE: Fox River products are guaranteed against manufacturing defects for one year; products may be returned within one year with the dated receipt to the store where you purchased them or by following our FoxSox.com return process