“This is THE shirt you need for weather that is not too hot and not too cold, but this shirt will keep you warm even if the weather is a bit colder than you’d like. Somehow they have it woven to block the cold wind but also let you breathe when it’s warm out. Everyone compliments me on the shirt too, so I highly recommend you get yourself one. I’m 5’11”, and 173lbs, and a medium fits me perfectly. The large looked more like a jacket than a shirt, but a medium is just right.”