I was getting a lot of soreness at about the 15-20 mile mark on my new Roubaix. Someone suggested I try different shorts and it worked. My old biking shorts worked fine (chamois) but the new ones (gel) did not, they also felt big and felt like I was carrying some extra "stuff" between my legs. I had bought them due to the price...........recently bought a new chamois pair that I paid about twice as much for and they worked fine (also a smaller size). Didn't think they would make that much difference but they do. Not sure if it was the size thing, the gel thing, or just better quality but I shall spend the extra money for the Specialized chamois shorts in the future!