FLAT-LESS – WITH A PURPOSEFUL TREKKING TREAD.Asphalt or off-road? Everyday use or bicycle expeditions? This versatile tire always does the job. Its robust construction handles almost any mistreatment. Protected by SmartGuard, the most effective puncture protection belt available for bicycle tires.FLAT-LESS WITH MARATHON PLUS.Only Marathon Plus tires make your bicycle flat-less. The 5mm thick puncture guard protects even against tacks 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.