Start your day in MUK LUKS® Men's No Show Sport Socks. With arch support and blister tab, these simple socks will help relieve tired muscles while forming to your feet perfectly. Machine wash cold. Non-Chlorine bleach when needed. Dry flat. Imported. - 80% Cotton, 18% Polyester, 2% Spandex Knit - Arch/Instep Support -Seamless toe & blister tab - Multiple Patterns - Comfortable Fit - One Size (Fits shoes sizes 9-13)