Relying on its proven Spine Concept system, Fi'zi:k developed a new line of handlebars that specifically correspond to a rider's level of flexibility and riding style. For those unfamiliar with this philosophy, Spine Concept essentially groups cyclists into three categories (with corresponding animal titles) based on one's spine flexibility. For example, the "snake" has a flexible spine, the "chameleon" has a moderate level of flexibility, and the "bull" has more of a rigid spine.