Stay prepared with the latest range of Schwalbe 20 inch inner tubes at Fawkes Cycles. Schwalbe 20 inch inner tubes are highly robust, preventing riders from frequently suffering punctures. Schwalbe inner tubes help to give each rider a smooth and comfortable ride. Schwalbe 20 inch inner tubes are only suitable for tyres that are 20 inches in size. On the lookout for more cycling accessories? Shop the latest Schwalbe pressure gauges.