Terry's longest distance, lowest profile, widest cutaway Butterfly with something extra: Poron XRD. Designed to take comfort up a notch for endurance riding, the Butterfly Century is engineered with a layer of Poron XRD shock absorbing material between the saddle's base and foam layers. The Poron XRD reduces road shock and allows for a thinner layer of foam and a narrower overall saddle profile, without loss of rider comfort. A larger foam cutout provides greater soft tissue relief. Additionally, the Century features a thin layer of gel along the top, a wider cutaway, sculpted foam for pressure relief in key areas, and a seamless Fibra-tek cover that reduces the incidence of high cadence chafing. - Fibra-tek cover with Poron XRD shock-absorbing layer - Widest cutaway in the Butterfly line up for maximum pressure relief - Length x width: 262mm x 152mm - Weight: 268 grams; 9.5 ounces - Rails: Ti-316