Fizik aliante r3 kium saddlelaunched in 1999, the aliante quickly became the go to saddle for professional and recreational riders alike. Despite its success, fizik didn't intend to rest on the success of the aliante saddle. This saddle is the widest and most longitudinally waved of fizik's spine concept range and benefits from the input of the pro peloton. Lightweight and strongthe aliante r3 kium demands you to perform at your best by offering a saddle which is both flexible and agile.at 215g, this saddle is made from a composite fiberglass co injected nylon shell for support with optimal stiffness to weight construction. Twin flex technology couples a strong, stiff carbon layer with a flexible, comfortable carbon layer atop an alloy kium rail. The cumulative effect of this technology is a saddle that is light, durable, and strong.the bullif you have a relatively low degree of spinal flexibility more than 90 degrees between your straight legs and back when bending over as far as you can, keeping your legs straight at shoulders' width apart, you are a bull.dagger your degree of spinal flexibility will top out quite quickly when attempting to adopt the performance position.this means you will rotate you pelvis fully so you are best suited to the increased curvature support of the aliante shape.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 twinflexrail kiumcover thermowelded black microtexrear cover anthracite black microtexscuff guards blackwidth regular 142mm wide 152mmintegrated clip system compatibleweight 215gbuy fizik components from chain reaction cycles, the world's largest online bike store