ULTRA Merino 125 LS Crew-T
This is hands-down the most comfortable shirt I have ever owned in my life. It takes restraint to refrain from using it as a house-lounger rather than preserving it as a piece of my hunting ensemble. In the field, it was remarkable. I lived in this shirt for multiple days on a Kodiak goat hunt in October, and it kept me cool while ascending the steep mountain through the brush, yet was a warm baselayer when we stopped to bed down. I carried a long john top to change into at our spike camp, and literally forgot to change into it because somehow this shirt was completely dry despite being drenched in a combination of sweat and seeping, cold rain just a few hours prior. It is expensive, yes, but a goat hunter can't afford NOT to set out in this kind of base layer. It does run a smidge big - I always always always wear a Medium shirt, yet this Medium has a bit long sleeves, and the torso is a bit baggy. A Small would provide a more athletic fit. In summary, I'd have 5 of these shirts if I were independently wealthy. Thanks for my favorite shirt, Kuiu.