The fit is great on the top and it's so soft and stretchy. The fit is a bit loose for a S but my t-shirt size is between S and M anyway. I bought a M as well and it was huge. But it's very long for size S, I'm 5'7" and it's 4" too long. So I would only recommend it for people who are taller. But it's so nice I might get it hemmed instead of returning it.

Out of the packet the material is very nice, soft and smooth like a quality cotton but with wicking/cooling properties. The quality is also very good. So far, so good... The fit is just very odd. I ordered a medium which was great across chest/arms/shoulders but ballooned around the middle, reminded me of maternity wear. The fit was totally disproportionate. I thought it may have just been a QC issue so tried the second one I bought...exactly the same.

Nice fabric. I think it is just slim enough. A little bit long though. 

I bought 2 of these "Performance" t-shirts 12 months ago and were perfect quality and fit. Just received 3 new ones and they are almost a full size bigger than last years. Was a tapered fit now straight, baggy and very long. Possibly need to size down on these.

The top feels good quality and is incredibly comfy. I would highly recommend it.

Real comfy shirt, both casual and training. Washes easy and quick drying. I'm 6ft 2 and medium shirt fits great

This is a great gym top. It is true to size and allows for movement in the shoulder. It fits gently snug but not tight, if you want it slightly looser go a size up. It is also long enough to keep you covered when reaching above your head. All in all, I am very pleased with my purchase.