The prologo zero ii is an ideal saddle for short to medium distance riding where a frequent change in position is necessary the saddle features new tirox rails these are made from stainless steel for a lower weight than the old ti 14 rails greater resistance and vibration absorption connect power control prologos patented name for these new saddles featuring dense bunches of short suction cup like gel polymer tubes this technology has been used in moto gp and formula 1 largely in glov