- Ergonomic Road saddle designed specifically around the female pelvis - Forward positioned and anatomically adapted pressure relief channel prevents discomfort and numbness - SR Pro Carbon: Carbon composite shell with orthopedic AirCell foam with OrthoCell pads - SR Pro: Nylon composite shell with orthopedic AirCell foam with OrthoCell inlays - SR Sport Gel: Nylon composite shell with orthopedic comfort foam with gel inserts for optimum pressure relief - Recommended sizing for sit bone width: S/M 9-12cm, M/L 12-16cm