The Nago Evo is a unisex semi-round saddle that is ideal for medium to long distance, road and off road riding. It offers unbeatable versatility for riders who like a choice of riding position.The Nago saddle also uses Prologo's ESD technology. ESD (ergonomic shape design) is where Prologo have identified a new ergonomic design for the centre of the saddle, which allows more space for your legs and an overall better cycling position. Further to this, the ESD reduces the friction of the quadriceps against the body of the saddle.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.CPC: connect power control: Prologo patented technology. The specially designed CPC surface features a mat of hollow cones of various heights and diameters, arranged for maximum benefits to the rider. These include optimised grip, shock absorption and air cooling. It also enhances blood flow through a massaging action, reducing numbness and tendon related discomfort.The saddle also has active density technology which combines 3 foam densities with a variable stiffness base. It's structured in different areas using 3 related foam densities. Features:278x134mmTirox alloy 7mm railMicrofibre coverLight foam padding226g weight