Fizik Arione K:ium Wing Flex Black Road Saddle with Black Suede Stripe features the K:ium rails for strength and a light weight design. The saddle is equipped with wing flex construction to allow free thigh movements, regardless the rider"s position, along the saddle. Turn the saddle over and you"ll notice several slits cut in the forward edge of the saddles wings. These bend and flex just enough to get out of the way of your thighs as you pedal, but allow the shell to remain firm enough for support and power transfer. This design gives more seating position possibilities with no compromise for more comfort and more performance. Here"s another outstanding feature of the Fizik saddles; I.C.S. or Integrated Clip System, which allows you to attach a Fizik Saddle Pa:k or Blin:k red tail light directly to the saddle with no fuss. Specs: Cover - Black suede; Thigh Glides - Black microtex; Rail - k:ium; Weight - 225 grams; Length - 300mm; Width - 132mm; Scuff Guards - no; ICS - yes.