I absolutely love this shirt. The material is so soft and comfortable. I mostly wear it around the house in winter (I keep the temperature low) over a t-shirt. It feels awesome. I'm 5'9 and 170 lbs, average build. I find it tight in the chest. I always find I'm between a medium and large. However, I'm guessing that a large in this shirt would be a bit big. Other than the fit (for me), this is a great shirt.