Prologo Saddle Dimension T4.0 143 AmThe Dimension 143 features a nose that's 35mm shorter than the previous model. The PAS (Perineal Area System) channel, open in the middle of the saddle, is designed to eliminate pressure peaks and numbness. The combination of a short nose and the PAS system ensures blood flow and pressure relief, guaranteeing comfort even in the aerodynamic position or during the maximum thrust phase.