At first I ordered this shirt for my husband in a medium size but it's too small compared to the standard medium size, so we decided to order it again in a large size and the fitting is great. I think it's a very nicely lined shirt, it definitely makes a difference and it's worth paying a little more because it's so flattering and he looks better dressed. The shirt is not too slim fitted, I thought it might be the typical shirt for skinny men with tiny waists but no, it's actually a little more forgiving. The fabric is not thick and not too lightweight, works great for warm weathers, looks really nice either tucked in or not
Squared-minded guy was happy with this choice.