Copper Sole Men's Cupron Pro Therapy Diabetic QuarterSocks Without Logo 86% Polyester, 13% Nylon, 1% Lycra Spandex Made in US Machine Wash Cupron AntiFungal fibers kill and prevent Athlete's Foot Fungus on the sock Cupron AntiFungal fibers help kill foot odor Moisture-dispersion technology keeps feet dry and comfortable Cushioning in the sole of the sock absorbs shock, protects feet, and provides durability Non-binding top and smooth toe seam