Vittoria Air-Liner Tubeless Gravel Tire Insert Description: The Vittoria Air-Liner is a foam-based tubular insert for tubeless tires designed to protect the rim, enhance grip and prevent punctures. Features: Air-Liner can be used on both standard wheels and tubeless-ready wheels, with both tubeless and tubeless-ready tires, and with any type of sealant Fits any type of valve for tubeless Enhanced rim protection Allows for lower tire pressures Prevents burping effect Prevents bead breaking Allows for tires with lighter casing Sold Individually Specifications: Wheel Size: 650b/700c Recommended Tire Width: 31 - 40mm Color: Green Weight: 47g