Selle san marco zoncolan dynamic saddlethe selle san marco zoncolon dynamic saddle has a pro inspired design named after the most extreme climb in the giro ditalia it features a rounded rear and side section along with a tapered drop nose for reduced leg abrasion features railsmanganese useroad rounded rearside section tapered drop nose for reduced leg abrasiontechnologies manganese railsthis material increases the characteristics of the frame by improving its resistance to wear cause