Fizik antares r3 versus evo bike saddlewith a slight dip in its middle to help you to hold your spot and a central cut out to prevent pressure spikes, the antares r3 versus evo is ideal for road racers. Retaining your place on the saddle is important for better stability and consistent power output and to further prevent discomfort, fizik has added its comfort core foam. This advanced padding spreads your weight evenly across the entire saddle, for mile after mile of enhanced support.a saddle for medium flexibilitythis saddle is ideal for riders with a medium amount of spine flexibility and those who have a minimal amount of pelvis rotation when pedalling.advanced constructionthe antares r3 versus evo has kium rails that are lightweight and strong and its nylon base is reinforced with carbon fibre. This construction gives you a platform that provides outstanding durability and pedalling efficiency. Finishing off this saddle is fizik's comfort core foam and a tough microtex cover.features cover light microtex shell carbon fibre reinforced nylon rail 7x7mm kium padding comfort core foam use road versus pressure relief channel integrated clip system compatible dimensions lxw regular 275x139mm large 279x152mm weight regular 215g large 235gbuy fizik components from chain reaction cycles, the world's largest online bike store.