Under armour coldgear infrared quarter zip mens top this under armour coldgear infrared quarter zip top mens is crafted with coldgear infrared technology which is a thermo conductive coating which absorbs and retains your own body heat without any extra weight or bulk its benefits from flat lock seams which promotes a comfortable feel against your skin which does not chafe or irritate long sleeves are teamed with a quarter zip fastening on the front under armour branding completes the wh