Prologo scratch m5 pas nack saddlethis stunning seat is suitable for both road and mtb use as it delivers incredible comfort and reliability wherever your journey leads you. Part of prologo's restyled line of versatile saddles, it's equipped with 4.0 technologies which make it innovative in terms of size, shape and ergonomics. It features an ultra tough nack rail construction which allows it to conquer road racing and trail riding, so you can maintain your momentum as it holds you in place.open base saddlesetting the standard for innovation, this sleek version is kitted out with an open base. This acts in the same way as a perineal channel by eliminating pressure peaks around your pelvic area. The closure of its prostate zone also offers better protection against extreme climatic conditions such as rain or mud.features rail material nack carbon use road, mtb, triathlon dimensions 250x140mm rail size 7x9.3mm type round gender unisex part number pl345 weight 155g approxtechnologies multi sector system the mss multi sector system, designed in collaboration with the politecnico of milano, improves comfort and performance. The active foams, separated from each other, create 5 mapped zones that work individually, supporting the normal pedalling movement both during the pushing and pulling phases. The round shape of the scratch m5 allows the pelvis to rotate naturally, creating stability and support for the lumbar areas it also favours the distribution of pressure over a larger surface.buy prologo components from chain reaction cycles, the world's largest online bike store.