problem with off the rack suits is that they are sized porpotionally. so you'll be hard pressed to find one that fits you JUST RIGHT. its actually probably just right height wise. 1pc suits are made to fit you when your on the bike, not standing up. If you can zip it up and still breathe, you should be fine. I cannot stand straight up in my 1 pc. you probably just need time to get adjusted to the feel of it.