I needed to get some warm gear to train in my home gym which I built in my barn. Although it's rain-proof, in every other respect it may as well be outside.
I'd been having temperatures of -7 c. So you could see my need.
I'd never worn a compression base layer before, and generally dislike tight gear.
However, this proved to be surprisingly comfortable and easy to wear.
Ohh, and it kept me warmer too.