Patented Body Geometry design is lab-tested for both men and women to ensure blood flow to sensitive arteries. Stiff FACT carbon fiber shell is tuned for support and ride compliance. Super-light EVA padding for comfort and support on longer rides. Ultra-light, strong, and oversized FACT carbon rails. Level 2 padding: Medium density foam for bike feel with additional cushioning. SWAT™-compatible mounts molded into the saddle base allow for sleek and integrated storage solutions. Size 143mm / Weight: 141g. Size 155mm / Weight: 145g. NOTE: Oversized 7x9mm carbon rails are not compatible with seatposts equipped with side-load clamp mechanisms for 7mm round rails.