I originally ordered this shirt in a M (my usual size) and, after a week or so (since the shirt comes from overseas) received it. On the plus side, it was a great shirt, but on the minus side, it was too large. I notified YIUME (David's Wear) and they let me know that they were adjusting the sizing on the shirts and offered to replace the too-large shirt with a shirt that is now their M (but is closer to what had been their S previously). Long story short, I exchanged the previous shirt for a new one and couldn't be happier. This is a great looking, great fitting fun shirt for summer. Quality is top notch and - as someone who has had shirts custom made for me in the past - I'm hugely impressed with the way the pattern match is perfect where the two front halves of the shirt fit together at the placket where the shirt buttons.