Schwalbe Marathon HS 420 The original The granddaddy of all high quality touring tire.. The Greenguard highly elastic, rubber is 3 mm thick. One third of the Greenguard of recycled latex products is manufactured. The "anti-aging inch sidewall can withstand the typical overloading due to insufficient inflation pressure for much longer before cracking that. The following sizes bear the ECE-R75 mark and are also approved for fast E-Bikes up to 50 km / hour: 47-406, 47-559, 37-622, 40-622, 47-622, 50-622.