I was worried after reading some reviews about the sizes running small and finally decided on ordering the XL tall size. I am 6'2" 215 lbs (no gut) and it fits perfect. I really like the way the put two zipper sliders so you can either open the whole thing to put it on or open from the bottom if you need to reach inside without taking the whole thing off. I recommend this. I will use to do mechanic's work