Vittoria Air-Liner Protect Tubeless Insert - Enduro, 27.5 x 2.4-2.6"Air Liner Protect Tubeless tire inserts provide enhanced tire protection from the most extreme impacts, shielding your wheels from the unforgiving elements of the trail. Constructed from a durable polymer foam ensuring long lasting product life, allowing riders to confidently tackle the most demanding trails and terrains. The design provides a robust barrier between the rim and the tire, offering unprecedented protection against punctures, sidewall