Prologo cpc nago evo pas tirox saddlethis semi round saddle is ideal for medium distance riding it offers a good choice of riding positions making it a versatile option for many road cycling situations the construction of this saddle makes it very comfortable it would be suited equally to training as well as racing shape semi round end use road learn more with the prologo buying guide technologypas system perineal area system this system is designed to eliminate pressure spikes and numb