Men’s short sleeve button down, sz S (fits like a medium)

Men’s short sleeve button down, tag says sz S (fits like a medium). I’m 5’8”, 150lbs and almost always wear a medium unless another size doesn’t look right. This S fits more like a medium. Check out the pics to see how it fits me and also my other listings to see how most other mediums fit me. Not sure if the brand. It looks like it’s on the tag, but the words are so small. 100% cotton. Great style shirt! Any questions just ask. Thank you for looking!