The B66 and B66 S are among BROOKSs most loved products, having beenon the market since 1927. Classically sprung with double rails for supreme comfort, B66 and B66 S are the ideal all-rounders for daily city or touring use in a rather upright posture. They are most appropriate for cyclists who set their handlebars higher than their saddles. In general, the more upright your riding posture, the wider, and more heavily sprung, the saddle you should choose.