Did you know MONS is SNOW spelled upside down and backwards? Mons Royale is where you should be starting your kit. Made from 100% Merino Wool, you'll be in good hands as Merino next to the skin helps keep you dry when you start to sweat and the anti-microbial nature of the material keeps you smelling good even when working hard. Thumb loops are a convenient bonus that allow you to secure your sleeves for added comfort when layering on those cold days. In addition to stellar performance, this base layer will have you looking gooooood when you take off the jacket and make a couple laps through the lodge during lunch. Disclaimer: if you don't like compliments then you might want to buy something else.