A saddle for MTB that fights the discomfort of the seating area. Thanks to the ergonomic core and TwinShell design, it absorbs shock perfectly and you can go for a long ride without worry. The saddle supports the natural movements of the pelvis when pedalling, actively relaxes the sit bones and reliably absorbs shock and vibration.thanks to the relief channel, it effectively prevents numbness and pain. Name: Ergon SMC Core Men Use: MTB Sizes: S/M, M/L Core: BASF Infinergy® (E-TPU / Closed Cell Particle Foam) Skeleton: Nylon Composite Scuff: CroMo Gender: Men Seat bone distance: 9 - 12 cm (S/M), 12 - 16 cm (M/L)