Under Armour Men's UA ColdGear Infrared Run ½ Zip

ColdGear Infrared technology uses a soft, thermo-conductive inner coating to absorb & retain your own body heat. Ridiculously soft, smooth fabric delivers superior comfort, all day. Tiny hole mesh back provide strategic ventilation. 4-way stretch fabrication allows greater mobility in any direction. Moisture Transport System wicks sweat away from the body. Anti-odor technology prevents the growth of odor causing microbes. Graphics & logos are reflective for greater visibility on low-light runs. Thumbholes to keep your sleeves in place. Body: 7.0 oz. Polyester/Elastane. Back: 4.5 oz. Polyester/Elastane. Imported.