The Schwalbe Big Apple Reflex Tyres have air suspension built-in. With Balloonbike-comfort: exceptionally convenient cycling without using complicated technology! Air cushion tyres are used as natural suspension. Inflated to around 2 Bar a Balloonbike rolls really easily and with a full suspension effect. Schwalbe Big Apple Reflex Tyres Features Wired Tyre SBC Compound Integrated Kevlar Guard E-bike use for speeds up to 25kph Dynamo ribbing for extra grip