Scratch M5 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 along the saddle each composed of different interactive foams and single-cell padding. CPC Models feature material on top of the saddle that provides higher grip better airflow and vibration absorption. Nack models feature a Nano Carbon composite rail paired with reinforced seat clamp area for the perfect fusion of performance and reliability. Tirox model features an aerospace light Ti-Alloy rail that provides a balance of weight and strength. New T-Shape base offers comfortable unisex design