PROLOGO SCRATCH M5 PAS NACK 140 WHITEScratch M5 is the new line of saddles that use 4. 0 technologies; innovative in terms of size, shape and ergonomics, they are suitable for multiple uses from road and off road to Triathlon The Round Shape of the M5 allows the pelvis a natural rotation, creating stability and support for the lumbar areas and distributes pressure over a greater area MSS Multi Section System This technology provides three different individual zones mapped and separated