Diabetic Care Crew Socks 60% MicroFiber Acrylic/ 32% Polyester/ 4% Nylon/ 4% Lycra Made in US 60% Microfiber, 32% Polyester/Silver Technology, 4% Nylon, 4% Lycra Silver Technology redues growth of Odor Causing Bacteria Anti-Microbial/ Anti-Oder Hand Wash with soap & Water, Hang to dry, Do not use Bleach, Do not tumble Dry USA