With an anatomic cut-out shape and advanced technology, materials and craft, Antares R3 Open is a performance road saddle for riders who want a medium saddle profile and a cut-out to avoid pressure and numbness. Made for Chameleon riders with medium body flexibility and low pelvic rotation while pedaling, the Antares is a neutral profile saddle with support and flexibility so you can move to find your power spot and maintain comfort. Antares R3 Open features a composite Carbon-reinforced nylon shell and a light, strong, corrosion-resistant K:ium rail. A Comfort Core foam layer beneath the neat, durable Microtex cover provides comfort, which is enhanced by the full anatomic cut-out that avoids pressure on the rider’s sensitive soft tissue and ensures that all weight is correctly supported across the whole surface of the saddle. Like all performance fi’zi:k road saddles, Antares R3 Open is light, flexible and agile. It\'s designed for pros, with pros and raced by pros. Open central cutaway Carbon-reinforced nylon shell K:ium rail Black Light Microtex Cover I.C.S ready for bags & lights Comfort Core foam padding Standard: 275x142mm, 205g Large: 275x152mm, 211g