I have been riding for the last year and only purchased Pearl Izumi gear and this is my first P.R.O. line bibs. From now on I will buy nothing besides P.R.O. as they truly make the difference for comfort, fit and keeping cool. I ride at least three times a week and around 125 miles. My legs and seat have never felt better. Unlike many of the other reviews I have read about the product fitting too tight there were no issues. I am 5'10" and 200 pounds on a large frame. Next month I will be riding my first century with my new bibs and really look forward to riding now in comfort.