Schwalbe Big Apple Reflex Tyre 20" 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.For comparison: A normal tyre with a width of 37 mm must be inflated to a rock-hard 4 bar, in order to roll similarly well. class="disc"> Wired Tyre SBC Compound Integrated Kevlar Guard E-bike use for speeds up to 25kph Dynamo ribbing for extra grip