Firstly, the look and fit of this jersey are both excellent. (I'm 177cm, 77kg and took a medium and it fits perfectly). The aesthetic is excellent - the patch on the back is an awesome touch and the minimal branding really really works. Probably one of the best looking jerseys I own. The Cobalt Blue has that magic mix of being both a vibrant colour, but not too flashy.
The quality of the material (which you can't really see online) is exceptional - super soft, plenty of give, really comfortable but still providing a good tighter fit. You could wear this for days without any irritation or issues.
Good quality zipper and the zipped pocket at the back is a big plus!
The couple of minor things that aren't so great; the pockets at the moment sag when there's anything in them. This is being fixed in any jersey you buy now, and if you have already bought one, Maats will do the alteration for free. The second smaller issue I have is that when I get super sweaty, the sweat does show up in the material as darker areas which doesn't look great; important to note that this doesn't affect comfort at all.
In conclusion, a great looking, comfortable jersey, perfect for long days in the saddle.