Schwalbe AV7

"The Schwalbe AV7 standard bicycle inner tube is the ideal choice for bicycle tires in size 20 inch (ETRTO 40/62-406/428). This inner tube is characterized by its above-average air tightness, which means that you need to inflate less often and can ride carefree for longer. The exceptional material quality and uniform wall thickness ensure outstanding durability and reliability. Millions of cyclists worldwide trust the proven quality of this tube, which is known for its durability and stable performance. Experience a new dimension of comfort and safety on your bike tours with the Schwalbe AV7."