Schwalbe SV19

"The Schwalbe standard bicycle inner tube Nr. 19 is the ideal choice for anyone who wants maximum reliability and durability. This inner tube is suitable for bicycle tires in the sizes 27.5", 28" and 29" Inch, with ETRTO-values of 40/62-584/635. Thanks to the excellent material quality and the uniform wall thickness, this inner tube retains air for an above-average length of time, which ensures less maintenance and more riding pleasure. The SV19 from Schwalbe has proven itself millions of times over and offers you the safety you need on your bike tours."
"Schwalbe's proven quality ensures that the inner tube works reliably even under demanding conditions. Whether you are riding on asphalt roads or rough terrain, the SV19 offers consistent performance and effectively protects against punctures. Put your trust in Schwalbe's experience and enjoy a carefree riding experience with this durable and robust bicycle tube"