I love this company's boxer briefs and trunks so I tried one of these. I have two issues with this shirt. Firstly, I have undershirts that I've gotten at big box stores that fit much better (have more of a slim fit). These are really kind of baggy. My second issue with the shirt is the collar does not stay flat. One of the sides always folds in on itself. It was like this out of the package. I'll try ironing it to see if that fixes it.