Quite a good quality t-shirt, it's not a throwaway for 17 euros, it's decent. As for the fit, I wear Medium and had no issues with the size. The print that appears as intense blue in the photo is nothing like reality. It turns out to be a dark blue. It has gone through several washes but the shirt remains immortal.

I relied on the comments of others and got a smaller size. Unfortunately, it was a mistake. Unless someone wants to be super tight, it's not suitable. And I am relatively slim. If I had muscular arms and a slightly toned chest, it wouldn't be a problem. Get your size. Although it is generally tight and long. Asymmetric blouse. I had bought the gray one in M and I normally wear L.

Quite good quality.
As some others say, buy one size smaller.
I wear XL and bought L and it's fine

The only thing I would like is for it to have a slightly tighter fit on the body and sleeves. Also, the color is not exactly black, it reminds me more of dark blue. Other than that, it's a very nice shirt.