Ergon ST Core Evo Men's Saddle Ergon ST Core Evo saddle features an ergonomicaly shaped relief channel to provide comfort over long distances. Twin shell with BASF Infinergy core sandwiched between isolates the rider from the road surface. The Ergonomic core dynamically adapts to pelvic motion providing a floating ride sensation. Features Gender-specific relief zones accommodate the unique anatomical differences between men and women cyclists3D damping adapts to pelvic motion with minimal pressure and reduced friction | Ergon | St Core Evo Men's Saddle Medium/large