Fizik arione r3 kium saddlethe arione is 1 of fi'zik's 3 spine concept men's road saddle shapes. Purpose built with lightness and flexibility in mind, this saddle is flat from nose to tail and now features a narrower tail so you can shift to find your 'sweetspot'. Lightweight and flexiblethe arione r3 features a composite glass co injected nylon shell to provide the best support with optimal stiffness to weight construction. As expected from fizik, the wing flex technology enables flexibility where the rider's thighs meet the saddle. An alloy kium rail has been included to shave off some weight.weighing in at 200g and delivering flexibility and agility, you will sit atop a performance oriented saddle.the snakeif you are very spinally flexible far less than 90 degrees between your straight legs and your back when bending over as far as you can, keeping your legs straight at shoulders' width apart, you are a snake.dagger you achieve the performance position using your spinal flexibility rather than rotating your pelvis.daggerdon't know if you're a bull, chameleon, or snake? No problem! You can download fizik's handy spine concept evo app which tests your flexibility. Simply search for spine concept evo in the itunes app store or google playstore and download it to your device.for assistance on how to use the app, click here.featuresshell composite glass co injected nylon wingflexrail kiumcover thermowelded microtexthigh glides thermowelded black microtexdimensions 300x130mmintegrated clip system compatibleweight 200gbuy fizik components from chain reaction cycles, the world's largest online bike store