This saddle is Astute’s top model and benefits from the very best of its developments in materials, construction techniques and technologies. For example, one of the stand-out features is the saddle’s twin carbon fibre shell design. This system combines with Astute’s Spas System Technology (SPAS) to soak up and disperse vibrations. High-Performance Comfort Saddle In addition to offering highly-efficient vibration dampening, the Sky Carb 3. 0 boats full 3K carbon fibre rails that are light, twist-resistant and extremely durable. Read more… This means there’s nothing to hold you back when you’re putting in a huge sprint effort or blasting up a steep climb. Finally, the memory foam padding ensures lasting comfort on the longest rides.