Ergon SM Men's Saddle. Features: Tailored to the features of male anatomy and optimized for the requirements of mountain biking Flat-top saddle with perfect pressure distribution in the sit bone region Deep and rearward increasing relief channel is complimented by a cut-out at the deepest spot SM Pro: Orthopedic AirCell foam with OrthoCell pads SM Comp: Orthopedic comfort foam with OrthoCell pads SM Sport: Orthopedic comfort foam Integrated Topeak mount Engineered in Germany