With an anatomic cut-out shape & advanced technology, materials & craft, Antares R3 Open is a performance road saddle for riders who want a medium saddle profile & a cut-out to avoid pressure & numbness. Made for Chameleon riders with medium body flexibility & low pelvic rotation while pedaling, the Antares is a neutral profile saddle with support & flexibility so you can move to find your power spot & maintain comfort. Antares R3 Open features a composite Carbon-reinforced nylon shell & 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 & 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 & agile. It's designed for pros, with pros & 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 Regular: 275x 142mm, 205g Large: 275x 152mm, 211g