Schwalbe Day Chair Inner Tube 25″- 559 – Presta Valve

A TUBE IS NOT JUST A TUBE….

Reliable inner tubes with a butyl rubber compound for lasting pressure retention. Schwalbe inner tubes undergo a rigorous testing process to ensure consistently high performance.

Airtightness – Apart from the quality of the ingredients, the purity of the rubber mixture is crucial to the quality of the tube. The base material is therefore sieved at enormous pressure through seven filters before being extruded. All tubes are inserted into a mould and inflated for vulcanization to ensure constant wall thickness and high air pressure retention.

Reliability – All tubes are inflated and stored for 24 hours in order to test for air pressure retention. Afterwards each, individual tube undergoes a careful visual inspection. This special quality control helps prevent unpleasant surprises and is why, over many years, Schwalbe tubes have become highly respected for outstanding reliability by bicycle dealers.

Valve – All valves are Nickel plated and threaded and valve inserts are replaceable. Also Schwalbe tubes with the classic bicycle valve are capable of pressure testing thanks to a high pressure valve seal.