DEFEET Aireator Socks Coolmax EcoMade/ Nylon/ Lycra Made in US 0.75" high 4" wide 60% Nylon, 39% Coolmax EcoMade, 1% Lycra Aieator mesh weave instep is light and speeds drying Lightweight, durabale and soft on the inside for extra comfort Machine wash cold, tumble-dry low, no chlorine bleach Made in the USA