The Phenom Comp was designed for comfort and strength over long days on the road or trail. It features a carbon-reinforced shell with outer edges that conform to your body for a near-custom fit. This version, unlike the Expert, has durable Cr-Mo rails for peace of mind, and like the Expert, it has our medium density, Level 2 Padding for ample support and comfort. Likewise, at the tail, you&';ll find the Phenom hallmarks of a rounded, anti-snag design, and throughout the saddle, an expertly tuned construction that provides the ideal degree of both stiffness and efficiency. Patented Body Geometry design is lab-tested to assure blood flow to sensitive arteries. Carbon-reinforced shell with flexible Adaptive Edge technology adapts to your body for a custom fit and all-day comfort. Low friction panels on the nose and tail improve pedaling efficiency and mobility while moving on and off the saddle. Durable hollow Cr-Mo rails. Lightweight and supportive PU foam for increased comfort on longer rides. Level 2 padding: Medium density foam for bike feel with additional cushioning. SWAT(TM)-compatible mounts molded into the saddle base allow for sleek and integrated storage solutions. Size 143mm / Weight 254g Size 155mm / Weight 265g