Vittoria Air-Liner Tubeless Insert - Road Medium 28mm

That allows for the expansion of the foam in the event of a flat tire. In fact, the foam fills the volume inside the tire and allow for a run-flat solution to get you home

• Enhanced rim and tire protection, allows for lower tire pressures, and run-flat capability to always get you back home
• Designed to be used with sealant – preferably without ammonia
• Air-Liner Road increases the safety of tubeless-ready tires by locking the bead of the tire into the rim, reducing the likelihood of burping at the bead
• Features a complete hoop as well as a hexagonal cross-section shape, both of which are designed to lock into a 700c road wheel and provide a very positive bead lock on tubeless tires
• Size: Small fits 25mm tires; Medium fits 28mm tires; Large fits 30mm tires