Aliante 00 00 meaning the top in italian is the top of the line saddle available in this shape the high modulus carbon shell with wing flex and mobius carbon braided rail make this the lightest and most stiff aliante model available despite the saddles very low weight special 00 foam compound ensures that comfort is not compromised aliante 00 is for the bull rigid spine if you have a relatively low degree of spinal flexibility more than 90 degrees between your straight legs and bac