I weigh 24,165 lbs. 5'9. I usually go for a large boy size but after reading the reviews and seeing some people saying they were too big I decided to size down to a medium. The seat was tight but comfortable. I needed it to be tight because I was wearing it with a jumpsuit. So everything turned out perfect. Well if I made this shirt with jeans I would make a big one. Here's a little detailed review to help someone contemplating sizing as some of the reviews I've read have been helpful and some have not. Hope that helps.
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