The Zero Tri PAS saddle has been designed by Prologo specifically for Triathlon events. The flat shape is suitable for medium-short distances. The large cut-out extends the entire length of the saddle relieving pressure points in the perineal area, making it much more comfortable to stay in your desired seating position.The PAS system is a channel in the base of the saddle. The hole or channel helps to maximises blood flow and supports the pelvic area while also preventing pressure peaks. This system is designed and developed to eliminate pressure and numbness to areas that need it most.**Specs*** Size: 254x136mm* Rail: TiroX Alloy 7mm* Cover: Microfibre* Padding: Light Foam* Weight: 247g