I have them on my bikes. I used to use selle italia flite gel flow, I used that seat for about 800 miles. Then switched to try new brand as the flite made me numb after 2 hours riding. with the mantra I can go 5 hrs before numbness. I have about 1500 miles on them I do wish the gel from flite was on mantra though. I'm glad my sugoi and castelli chamois are thick enough to compensate. Also like the fact they are longer, more seat time climbing before I have to stand. The nose is really narrow so less chaffing and you can sit far back also. hope this helps.