I am 5'9", 175 pounds, and the medium fits like a glove. If you plan to wear a coat under the thermo, you will need to go up a size, even though they say they run large. I have a leather jacket that will fit over it, so I should be fine. I do prefer the close fit that I received as opposed to a baggy fit as they tend to flap in the wind. I also have longer arms, and the sleeve length is perfect for me. My arms are 2-3" longer than normal. The leg length is also perfect for my height. As far as the suit being bulky and hard to store, yes, it is a bit bulky, but roll it up like a sleeping bag and you can have a manageable bundle.
Wonderful !! Rode in this suit all winter in shorts and t shirt...Size chart is no good..I had to return suit , however Dennis Kirk shipped replacement fast and at no cost !!! I waited a year before posting review to make sure that suit was as good as I say it is !!! It is !!! WONDERFUL !!!! BUY IT !!
my 2nd one, 1st is over 5 yrs old, exzaust burns...still water proof! but 1 one of the zippers came apart ... this will keep you toasty and dry! 100% waterproof! been in tornado like conditions, and stayed COMPLETLY dry! looks a little bulky,but doesn't feel like it....very comfortable and easy to get in and out of with boots on! if I would change one thing, would be stronger Velcro on the sleaves, that's it