The Specialized Sitero Pro Saddle is ideal for time trials. The Specialized Sitero Pro Saddle has been designed alongside Body Geometry Fit specialists, doctors, & engineers. Specialized claim the Sitero Pro is the best-fitting saddle for aerodynamic time trial positions. The saddle features a wide channel & aggressive shape for comfort & support, while SWAT™ mounts allow for aerodynamic storage of all your ride essentials.