Prologo Saddle Dimension Eva Nack Hb AmFeatures The PAS central channel is 18% wider, with increased padding on the sides to further reduce pressure on the female genitals. The saddle nose, 13% wider, has been designed to increase comfort even in the most advanced and aerodynamic riding positions, making this saddle perfect for cyclists seeking high performance without compromising comfort. Dimension EVA is available in two versions: with Nack rails and a long fiber carbon base, for