This is a nice, snug base layer that I use for skiing and biking. It is designed well and does not constrict movement or ride up in the back. It wicks well, drys quickly and weighs almost nothing. It is prone to snags, odor and has a needless plastic logo right on the front of the collar. Other than doing what a base layer is supposed to do, I have no idea why it is tagged as a cold weather solution. Overall, it is a great addition to any sports wardrobe.