Under Armour Women's Extreme Base Long Sleeve 95% Polyester/5% Wool Imported Game-changing lightweight performance wool construction ColdGear Infrared technology uses a soft, thermo-conductive inner coating to absorb & retain your own body heat Anti-odor technology prevents the growth of odor-causing microbes Exclusive UA Scent Control technology lasts longer & works better, keeping you undetected Raglan sleeves