The long central cutout guarantees all-day comfort and support on the whole length of the saddle. This feature improves the blood flow preventing numbness and provides relief from pressure on the perineum. Recommended for individuals with averagely high pelvic rotation.This saddle features the side profile of the seating surface with a central depression of less than 5 mm that is similar to a straight line. For this reason, it is listed as Flat saddle. Recommended for individuals with accentuated lumbar arch.