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 inner 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 C50rubber from old latex products. €žANTI-AGING€œ 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. FLAT-LESS WITH MARATHON PLUS. Only Marathon Plus tires make your bicycle flat-less. The 5mm thick puncture guard protects even against thumbtacks.  www.schwalbe.com/unplattbar  It is impossible to guarantee that a flat will never happen, but the Marathon Plus has the best defense against everyday tire wreckers such as glass, flints or metal shards. Use a pressure gauge to adjust tire pressures as the common 'thumb check' is insufficient due to the special construction of the Marathon Plus.