Was so excited to get these (a top and a bottom) for Christmas. I wore them on their own and then under some clothes to see if layering was fundamental to its performance. I came back here to actually see I had gotten it wrong and this was the kind of under armor that was meant to keep you cool. Going to wear my regular waffle woven thermals when I actually need to keep warm. These are cute as just a top, lounge wear, or perhaps in lighter use in cool weather.