DEFEET Armskin Wool Arm Warmers 49% Coolmax EcoMade/ 47% Nylon/ 4% Lycra Made in US 80% Merino Wool, 19% Nylon, 1% Lycra Long wristbrand for extra warmth SeCurl no slip band on the biceps Machine wash cold, tumble-dry low, no chlorine bleach Made in the USA