GREENGUARDThe puncture protection layer under the tread is made of 3mm flexible, special India rubber. Partly from recycling. Particularly reliable protection.ENDURANCE COMPOUNDThe Marathon compound for the highest durability.RECYCLINGOld products made of natural rubber (such as gloves, tubes...) are crumbed and, over several procedural steps, used as base material in the puncture protection system.PERFORMANCE LINEExcellent quality for intensive useProduced entirely from Fair RubberConsists of 70% recycled or renewable materialsMost environmentally friendly bicycle tire