Our Avon inner tubes are manufactured from Butyl Rubber. Synthetic rubbers are more resistant to oil, certain chemicals and oxygen. They have better aging and weathering characteristics. Butyl tubes are also provide good resilience over a wider temperature range. Butyl is less permeable than natural rubber so good for preventing air loss.
If for any reason we are out of stock of the Avon tubes we will supply Michelin Air Stop tubes or other top quality tubes.