The ISM PS 1.0 saddle is AWESOME! Part of me wants every track racer to know about it, but my competitive half wants to keep it a secret from the competition. This saddle rocks! I was able to find my ideal position easily and just let it rip from there. My track racing position is very aggressive and this saddle just made it a lot more comfortable. It made such a huge difference in comfort, and speed I was just flat out amazed! THANK YOU! THANK YOU! THANK YOU!