I picked this up and based it around what my size was, I wear a size XXXL shirt all the time and rarely ever have to go bigger depending on the brand of shirt I buy. Sadly, XXXL is the biggest I could get this and it's WAY to tight, infact, I can't even get it on! It's a shame I can't return it since I was out of town for a week when i got it and completely forgot I even had it a few days later.
Guess I'll be getting my fat ass to the gym.