I would get quite achy after about 90 minutes on the stock seat. If I took a break, I'd be achy again in about an hour. Virtually 100% cure simply by adding an Airhawk. Was in the saddle for about 15 days last summer on a coast to coast. I'd be shifting around in late afternoons, especially on the 1000 km days, but no real suffering. Highly recommended. Only nuisance for me was taking the thing off at night while staying in motels. I knew that if some sleaze stole the thing I'd have to get another, pronto. I carried a patch kit but haven't needed it so far. (>20,000 km)If I'm doing mostly highway within about an hour, even with my Sargent, I'm getting achy. I'm fit, just posteriorly challenged so I run into that problem practically seated anywhere.