Schwalbe SV21

"The Schwalbe standard bicycle inner tube Nr. 21 is the ideal choice for anyone who values quality and durability. Specially developed for bicycle tires with a size of 27.5 inches (ETRTO 40/62-584), this inner tube offers above-average airtightness. This is ensured by the excellent material quality and the consistent wall thickness, which have made Schwalbe a leading name in the bicycle industry"
"Thanks to its high reliability, which has proven itself millions of times over, the Schwalbe SV21 inner tube is an indispensable accessory for every cyclist. Whether you are on the road or off-road, this tube offers you the safety you need. It is not only robust, but also easy to fit, making it the perfect choice for professionals and recreational cyclists alike."
"With the Schwalbe SV21, you can be sure that your tires are optimally supported and you can concentrate on your ride without having to worry about air loss. Trust in the proven quality of Schwalbe and experience riding pleasure without compromise."