Within the Fizik Spine Concept system this saddle is categorised as a “ Snake” type, which means it’s designed for those who have lots of flexibility & minimal rotation of the pelvis when pedalling. Efficient & Flexible Shell The highly-advanced shell is constructed from carbon-reinforced carbon fibre, which features Fizik’s Wing Flex technology. This means the saddle is flexible in the area where the thighs meet the saddle, allowing the full natural movement of the pelvis. The shell is combined with tough, corrosion-resistant K:ium rails & Comfort Core foam that helps to spread the weight as you’re putting the power down.