Well, on the last two 45 mile rides on my Selle San Marco Atola, I started thinking maybe it's NOT the saddle for me after all. I think it might be too narrow at the back. I've been getting some unpleasant chafing where the back of my thigh meets the rear-end itself after about 20 miles... ouch. Bu tthe cut-out is perfect. I may try to find another saddle with a similar cut-out but with a slightly wider back. Any ideas?