Saddle Prologo Proxim W450 Tirox 155 Perf BkWhat started as a challenge to Polifactory, a multidisciplinary research laboratory that brings together young and brilliant minds, resulted in one of the most advanced E Bike saddles on the market Optimized saddle shape with 3mm more surface support with a 30 inclination to the tip and more flexible structure for impressive comfort Redesigned body shape and rear cover material designed to increase grip which ensures performance in all weather