We are not able to change out the saddle or seatpost, as the change can result in damage to the bicycle. The ladies step-through bikes have an Ultra Comfort Saddle, the Men Hybrid has the Fitness Ergo Saddle, which is more on the sportier side but comfortable as well. The CAAD OPTIMO Road Bike has the Stage Ergo, and the Synapse has the Selle Royal Seta S1.