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If you're skinny, they fit pretty baggy, but not huge. I'm a bigger guy (and by that I don't mean fat). I'm 240 and 6'2" and the XXL jackets fit me oh so nicely. However, the XXL pants don't fit me baggy at all. They're tight around the hips and quad area, but around the calves they're pretty baggy.
I'd probably get a large for pants and jacket. For the pants they have fasteners on the side that you can tighten up if they're too loose. Check www.the-house.com they have a sizing chart for 686 that's pretty spot on.
i'd get medium jacket large pants actually, I usually get my jacket the same or one smaller than my pants cuz a big ass jacket looks super goofy with tight pants... try them both on and have someone take pics of them so you can look and see how baggy they are.