Prologo cpc zero ii pas tirox saddlethis flat saddle is ideally suited to shorter rides like time trial or triathlon the wider seating surface allows for multiple seating positions without any stress on the pelvic area this saddle is also light and stiff perfect for competitive events shape flat end use triathlon learn more with the prologo buying guide technologypas system perineal area system this system is designed to eliminate pressure spikes and numbness in the pelvic area the pa