Schwalbe marathon touring tyre greenguardthe godfather of touring tyres the marathon touring tyre has received an overhaul to make it even better now featuring schwalbes greenguard which is a highly elastic 3mm thick rubber layer a completely new sidewall construction anti aging can withstand the typical cracking that results from overloading due to insufcient ination pressure and to complete the set this schwalbe marathon touring tyre greenguard is e bike ready so you can u