Schwalbe Marathon 365 Tire - 20 x 2.1, Clincher, Wire, Black/Reflective, Performance Line, GreenGuard, Addix 4Season, E-50The Marathon 365 directly replacing the Marathon GT 365, with a design the provides full grip in all seasons (even in cold, wet and snowy conditions) thanks to the siped tread pattern. Reliability is important, therefore the Marathon 365 has very good puncture protection thanks to GreenGuard technology. E 50 rated for E bike use GreenGuard features 3 mm of highly elastic special rubber, partly from recycling to provide reliable protection Product