You might drop a few of your running partners on cold mornings...unless you tell them about the UA EVO ColdGear Mock that's keeping you coming back for more. The slightly thicker, ultra-soft fabric traps your body's heat, big time, especially when you first come out. But as things heat up, it also wicks away the sweat that could chill you and make you uncomfortable. This tunic-length mock also fights odors and features chafe-free seams. All good reasons to tell the girls. Unless you actually prefer running alone.