Schwalbe’s classic touring tire gets a major update for 2011. The 5th generation Marathon is tougher than ever yet still robust enough for every-day transportation. A 3mm thick Green Guard puncture protection belt offers improved flat resistance compared to previous models and is made from 13 recycled materials so it’s easier on the environment too. Reflective stripe on sidewall. 100 PSI Max. 700c x 32mm 32-622 ISO. 640 grams.