Prologo zero c3 pas nack saddlec3 base is prologos highest achievement in both technology and quality so far c3 stands for carbon composite compound and allows us to make very light saddles below 145 grams but with higher performance and stability the latter improved by 13 the super light c3 even offer greater resistance to twisting deforming over time its carbon innovation in its purest form the pas system is a processing of the base of the saddle the hole or channel has been desig