I finally tried out my seat today on my mountain bike. My first pain free ride in years. I am 42 and have had lower back issues for the last few years. Finally got it under control and started trying to ride my bike again. After 3 or 4 miles my back and butt are just killing me. I have tried 3 or 4 different seats and nothing helped. I ordered an X series seat from you in December but I haven't gone for a ride until today. Let me tell you, I love this seat. My back never hurt either. I guess my other seats were so painful it made me sit a certain way which apparently was making my back hurt. I already want to ride again. This is the best seat My butt has had the pleasure of sitting on. Thank you so much for such a great saddle!