The Activator 3-pack is a screaming value. For half the price of competing brands, the Activator delivers more performance.Materials: 76% Polyester, 12% Nylon, 12% Spandex1" Stayfast CuffEnduro Skin Construction throughout footbedAirEator vapor zone3 pairs per packMachine wash cold, tumble-dry low, no chlorine bleachItem SpecificationsColorBlackSizeLarge,X-LargeSeasonWarm WeatherCuff LengthLow, 0-2"Type of MaterialSyntheticDefined ColorBlack