THE MOST PUNCTURE RESISTANT MTB-TIRE 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 provides superior puncture protection. Good visibility even in the dark.More information:Flat-less TechnologyIt 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.SPECIFICATIONS:- ETRTO: 57-584- Version: SmartGuard- Compound: Addix- Bead: Wired- Epi: 67- Load (kg): 125- Tread: HS468- max. Psi: 55- min. Psi: 30- E-Bike: E-50- Inch: 27.5x2.25- Seal: Tube- max. Bar: 4- min. Bar: 2FEATURES:- 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.- Performance Line: Excellent quality for intensive use.- Unplattbar: Exclusively from Schwalbe. Only tires with SmartGuard® and Smart DualGuard puncture protection can rightly call themselves unplattbar or flat-less. Proven a million times over - the safest choice for bikes and e-bikes. The flat-less puncture protection even protects against thumb tacks.- E50: 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.