Fizik arione r1 open road bike saddlea carefully crafted road bike saddle with the perfect mix of stiffness and flexibility, fizik has enhanced its arione r1 open model with carbon fibre for efficient power transfer and a low weight. Its flat shape helps you to move around easily to find your perfect riding position and the anatomically designed central cut out relieves pressure from your perineum area.advanced shell designthe shell of the arione r1 open is a carbon fibre reinforced nylon, which features wing flex technology to enable the full natural movement of the pelvis. This improves comfort and maximises pedalling efficiency and with the addition of fizik's comfort core foam and a microtex cover, the comfort level is enhanced even further. Made for riders with high body flexibility and no pelvic rotation while pedalling, the arione is longer than any other fizik road saddle, flat from nose to tail and has a narrow nose.carbon fibre railsa high quality carbon reinforced shell isnt the only major plus point with this saddle, it also has braided carbon rails. These rails are strong and lightweight and combine with the shell to give you optimum pedalling efficiency.featurescover microtexshell carbon reinforced nylonrails 7x9mm carbon braidedpadding comfort core foamuse road racing trainingopen central cutawayintegrated clip system compatibledimensions regular 300x130mm lxw large 300x142mm lxwmanufacturer's part number regular 70c0sa03a02 large 70d0sa03a02weight regular 199g large 205gbuy fizik components from chain reaction cycles, the world's largest online bike store.