The Schwalbe Billy Bonkers Performance Line Addix 20x2.0 Tyre Classic Skin is Schwalbe\'s new tyre for Pumptrack, Dirtjump and Slopestyle.This lightweight (490g Performance Line), not only rolls extremely easily, it also ensures fun loving and agile riding. If tricks and jumps get messed up, Billy Bonkers remains good natured, forgiving even egregious mistakes.Schwalbe Billy Bonkers Performance Line Addix 20x2.0 Tyre Classic Skin FeaturesMaximal micro teeth for grip on dusty and sandy groundClosely positioned blocks multiply the grippy edgesSmall ramps increase the speed of the tire. The result: More Airtime!