This Phenom saddle is Specialized longest and flattest saddle shape providing comfort across a wide range of fore/aft seating positions. Designed with Specialized body geometry technology and utilizing a 3D printed honeycomb structure to provide 28% less pressure where it counts. It is also uses Specialized FACT carbon rails for lightest weight.

While this item is being listed as "used", it is actually practically new and comes in the original packaging. I have only used it for an indoor training session and have never ridden on it outside. It would be hard to tell any difference.

MSRP : $450.00
Full details at : https://www.specialized.com/us/en/s-works-phenom-with-mirror/p/1000148879?color=1000148881-1000148879/

Note, this seat uses 7x9 oval rails (not round) so make sure that you also have the proper seat post clamps for your bike (not included, but available from seat post manufacturers and/or third parties).