The Vittoria Air Liner Road Tyre Insert Medium 28mm provides exceptional stability and run-flat capability for road cyclists. Made from a high-density polymer, it compresses under pressure to improve comfort and responsiveness. This insert allows you to confidently handle rough surfaces like chip seal and potholes, offering a smoother ride and minimizing the risk of pinch flats. Lighter than traditional sealants, it enables you to ride up to 30 miles after a puncture without repairs, making it a must-have for dedicated road cyclists.