It rolls easily over fixed paths on the central walkway. The powerful outer tunnels have bite in the terrain. The SmartGuard offers outstanding puncture protection.E-bike Ready 50 For fast e-bikes a special release of the tyres is necessary. Tyres with ECE-R75 approval valid throughout Europe are the simplest solution here SmartGuard The safest protection belt available for bicycle tires. Unsurpassable, for more than 15 years. It has proven itself in practice like no other breakdown protection system. Only tires with SmartGuard may rightly call themselves "unflatable". Only available exclusively from Schwalbe.TwinSkinAn additional rubber coating on the side protects against cuts and allows uniform colouring.recycled used products made of natural rubber (such as gloves, hoses...) are...