Ritchey WCS Marathon Saddle with Ti Alloy Rails: The Ritchey WCS Marathon Saddle with Ti Alloy Rails has a Wing design to dissipate vibration & a 35% carbon content shell for pedalling efficiency. Wing design to dissipate vibration Narrow 35% carbon content shell for pedalling efficiency Hi density foam Leather surface Cr N/ Ti Rails rails with abrasion resistant sides 223g Available in black or white Comp & Pro versions also available