Prologo scratch m5 pas tirox bike saddlethis high quality bike saddle is designed for road use as it offers efficient comfort and control on every ride. It features robust tirox rails which provide a firm hold to your seatpost, so you can pedal confidently while it supports you on every mile. Coming equipped with active foam padding, this versatile model creates mapped zones that allow your pelvis to rotate naturally. This enables you to benefit from its increased stability and pressure distribution across its surface.comfortable road saddle with pas systemprepared to carry you across mixed terrain conditions, this sleek component is also kitted out with a perineal area system. This means you'll enjoy improved blood flow as its centralised cut out eliminates pressure peaks and numbness. Weighing in at only 185g approx., the prologo scratch m5 pas tirox saddle delivers incredible strength without adding any unnecessary weight to your road bike.featuresuse roadrail material tiroxpadding foamgender unisexshape rounddimensions 250x140mmrail dimensions 7mmweight 185g approx.technologiesmss multi sector system proxim w450 introduces this new revolutionary technology. Three different individual zones mapped and separated along with the saddle, each composed of different interactive foams and single cell padding. These areas work independently adapting to all the positions that cyclists can take.pas system the pas system perineal area system is a channel designed to eliminate pressure spikes and numbness by improving blood flow. Its special ergonomic design, assisted by foam with variable density, eliminates contact points in the genital and or prostatic areas. The pas channel is ideal for users who prefer performance combined with comfort over long and medium distances.buy prologo components from chain reaction cycles, the world's largest online bike store.