Selle smp dynamic coloured saddlethe dynamic model is the ideal seat for intensive training or free time cycling it uses the structure of the forma model joined with minimal padding it is covered in real leather in the black versions and microfiber in the colored versions it has excellent all around features and is particularly suited for the medium wide pelvis the dynamic model has foamed elastomer padding where the ischial tuberosities and rear rest the patented features by selle smp su