I'm 6'4" with a size 36 waist. I currently wear Louis Garneau bibs. According to the size chart I should wear a Lg... but I knew that my height wasn't going to allow that. I went with an XL and don't have any fit issues or chafing. I recently bought some Zoot bibs in an XL too. Hadn't ridden in them yet, but they seem to fit good. YMMV.