The Kappa\'s Nylon shell is tuned to give more flex than Prologo\'s other saddles so it is perfect for sportive riders and weekend warriors. A cutout in the shell and padding relieves perineal pressure. Strong, tubular rails and the semi-round shape and 147mm width makes the Kappa Evo Pas a great fit for most cyclists. This saddle uses Prologo\'s \'Semi-Round\' saddle shape that gives the rider a comfortable seating area on medium to long rides and provides great versatility.