With an anatomic cut-out shape and advanced technology, materials and craft, Antares R1 Open is a leading 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. The Regular model is the narrower of our two options. Antares R1 Open features a composite Carbon-reinforced nylon shell and a light, strong, Braided Carbon rail. A Comfort Core foam layer beneath the neat, durable Microtex cover provides comfort, and is enhanced by the full anatomic cut-out which 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 R1 Open is light, flexible and agile. It's designed for pros, with pros and raced by pros.With an anatomic cut-out shape and advanced technology, materials and craft, Antares R1 Open is a leading performance road saddle for riders who want a medium saddle profile and a cut-out to avoid pressure and numbness. Open central cutaway Shell Carbon-reinforced nylon Rail 7x9mm Carbon Braided Cover Microtex Integrated Clip System compatible