New tubeless system from Vittoria.

The ring is mounted in the tubeless tire and allows you to continue driving even if you puncture just as you do not have to use as much tubeless sealant and you also have the opportunity to drive with even lower tire pressure.

Also allows one to use less liquid and it therefore ultimately weighs pretty much the same as a regular tubeless setup.

Airliner can only be used with the supplied valve.

The foam ring fits 25-622 tires.

Lasts for many thousands of miles, as long as the tire is replaced when worn.