High quality cotton fabric that's thick enough and brushed to provide a bit of warmth and a luxuriously soft feel. The colours are bright and contrasty, just like in the picture and the fit is quite relaxed. I have a 38" chest which often puts me on the boundary between a small and a medium because I like my clothes fairly fitted. I went with a small and fit was perfect in the chest. As expected for a casual fit shirt, there isn't much taper at the waist but this didn't bother me. I sometimes have issues with sleeves being a little short, especially if I size down to a small, but there's decent length to the sleeves here.
Overall, I'm very happy with the shirt and it works well as a shirt by itself, or as a second layer to throw over a t-shirt if the temperature drops in the evening.
This was one of two items in my first order from Finisterre and I will definitely be back for more in future.
A pleasant surprise for me was that all the packaging was biodegradable (a water soluble clear bag and a brown paper package). I thought this was a nice touch and gives me confidence in their commitment to being enviro-friendly.