Excellent 3+ season shirt.
This is a very impressive shirt. Something that needs to be mentioned is that the cotton twill material is amazingly soft to the touch so this is an incredibly comfortable shirt to wear either on its own or as an over-shirt on top of a polo shirt or base layer. The twill material combined with the Canadian style slotted buttons should also mean that it's very durable. A note on sizing: I have a 49" chest, muscular build, 6' 0" tall. I bought a 2XL shirt. It's fairly generously sized, though not too huge, so it gives enough room to be comfortably worn over a base layer, T-shirt or similar but isn't so big that it feels loose or floppy. One thing that could be a concern for some is that the sleeves are fairly anatomically cut so if you have huge forearms you may have a problem rolling up the sleeves. Otherwise the cut is very well done. I'd say that this is a 3+ season shirt. The soft feeling twill material may be a little too warm & wind resistant to wear on hot summer days but for all other seasons it'll be perfect. It would also work extremely well as an over-shirt for cooler mornings on otherwise warm summer days. Expensive for a shirt but definitely worth it. Highly recommended.