The Flat-less tire. Schwalbe's best selling model. The most puncture resistant pneumatic tire there is. In addition to the superior puncture protection it features many hidden values: Rolling resistance. The patented, 5 mm thick SmartGuard layer, when compared to all generic products, has a significant advantage in rolling resistance. Recycling.Also in the SmartGuard, we use a proportion of recycled rubber from old latex products. “Anti-aging” side wall. It now lasts much longer before developing unsightly cracks when subjected to use with too low air pressure. E-Bike ready. Due to its great properties Marathon Plus is an ideal choice for E-Bikes (E-25). The main sizes are approved and tested for E-bikes up to 50 km/h.