Schwalbe SV12B

"The Schwalbe standard bicycle inner tube Nr. 12B is the perfect choice for cyclists and wheelchair users who rely on quality and reliability. Developed for 26 inch tires (ETRTO 20/28-584/590), this inner tube offers outstanding durability and retains air for an above-average length of time. This is ensured by the excellent material quality and the consistent wall thickness, which ensures constant performance."
"Whether for daily commuting or adventurous bike tours, the Schwalbe SV12B tube guarantees the highest reliability, as it has already proven itself millions of times over. Schwalbe's careful production and strict quality controls ensure that this tube meets the requirements of demanding cyclists"
"With the Schwalbe SV12B tube, you are well equipped to enjoy your cycling experiences without interruptions. Trust in the proven quality of Schwalbe and experience a new dimension of safety and durability on your rides."