fizik Argo R3 Tempo Saddle Kium RailAn endurance bike saddle with a ride compliant carbon reinforced nylon shell and Kium hollow rail and a progressive cushioning, with lower compression modulus. Tempo Argos short length allows the rider to sit further forward without placing undue pressure on sensitive tissues. It also features an ergonomic cutout that was developed using detailed pressure analysis and input from medical experts.