The most puncture resistant MTB tyre is now approved for fast E-Bikes. With ECE-R75 mark. On the central ribs it rolls easily over hard paths, while strong outer lugs give great offroad traction. The SmartGuard(R) provides superior puncture protection.**Features:*** E-BIKE READY: For motor assist up to 50kph* PROTECTION: SmartGuard(R) Flat-Less - the most effective level of protection, a belt of 5mm thick, flexible India rubber, partial made from recycled material. Protects even against thumb-tacks* SIDEWALLS: TwinSkin which is an additional rubber coating to protect against cuts* COMPOUND / TPI: Endurance compound specific to Marathon tyres for maximum durability / 67 TPI* WEIGHT: 26x2.1 -1150g / 26x2.25 - 1260g / 27.5x2.1 - 1200g / 27.5x2.25 - 1295g / 29x2.1 - 1270g / 29x2.25 - 1350gPlease note that Schwalbe items marked as Special Order will be a delivery time of 7 days.**ETRTO:*** SCR1958: 60-584* SCR1958A: 60-622* SCR1959: 54-559* SCR1960: 57-559* SCR1961: 54-584* SCR1962: 57-584* SCR1963: 54-622* SCR1964: 57-622