The Syntace P6 Carbon HiFlex is designed to gently dampen road vibrations so you can be more efficient while pedaling. To increase comfort while still limiting sideways movement, Syntace designed the seatpost with the ability to flex backward under load. Syntace did this by meticulously arranging the carbon fiber structure. The HiFlex also features an integrated carbon head. The cold forged alloy 7075 lower rail plates, and deep head titanium bolts, offer 30 degrees of saddle tilt and maximum rail support.