The Shirt is nice but after reading the review I sized up.  I should have ordered my normal size.  I normally wear a small or Medium in tank style shirts but after reading all the review I ordered a large.  It was way to big.  If you want a shirt to fit like a tank top then order your normal size.  If you want a loose fitting shirt (not tank fit) then go ahead and order up like others suggest.  BTW, I am 5'6 135 lbs.