New tubeless system from Vittoria.

The ring is mounted in the tubeless tire and allows you to drive on even if you have a puncture, as well as not having to use as much tubeless sealant, and you also have the option of driving with even lower tire pressure.

Also means that you can use less liquid and therefore in the end it weighs roughly the same as an alm. tubeless setup.

Airliner can only be used with the supplied valve.

The foam ring fits 30-622 tires.

Lasts for many thousands of kilometers when the tire is simply changed when it is worn.