Good quality, but very long.
Good quality. Reasonable sizing. I'm 5'6", I weigh 140 lbs, and my measurements are about 38", 30", 38". I ordered a size medium, and it fits great. Snug, but not so tight that it's uncomfortable. One note is that the rash guard is SUPER long. It's so long that it covers most of my butt when pulled down. So, if that's not your thing, this might not be the rash guard for you.