THE ORIGINAL: The archetypal high quality touring tire. The highly elastic GreenGuard layer is 3 mm thick. One third of the GreenGuard is made up of recycled latex products. The “Anti-Aging” sidewall can withstand the typical cracking that results from overloading due to insufficient inflation pressure for much longer. E-BIKE READY. You can choose every Marathon for your E-Bike (E-25). The main sizes are approved and tested for E-bikes up to 50 km/h (E-50). NOTE: Tyres which include "Reflex" in the colourway includes a reflective strip on the sidewall. Performance Line Excellent quality for intensive use. Endurance Compound The Marathon compound for the highest durability. GreenGuard The puncture protection layer under the tread is made of 3mm flexible, special India rubber. Partly from recycling. Particularly reliable protection. Recycling Old 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. E-25 Tires with the recommendation "E-25" are the perfect choice for all pedelecs with pedal assistance up to 25 km/h. The most important criterion for this recommendation: safety. E-50 E-Bike tires with European ECE-R75 approval. Our recommendation for fast E-Bikes - S-Pedelecs with type approval, insurance, and motor assist over 25 km/h – for which a special tire approval is necessary.