There is literally nothing wrong with Ol' Reliable here. Simplistic and slim, it is soft and stretchy -- smashing any pre-concieved notions you might have about wool. If you were familiar with the Smartwool Merino 250 Crew, you are basically looking at the same thing here, meaning that the wool is a 250 g/m2 weight, or in layman's terms, this is a real warm baselayer. Pair it up with one of Smartwool's coordinated baselayer bottoms and you've got yourself the first two building blocks to an awesome day. Plus, you'll look cute.