Ultimate Trail Protection – Engineered for riders who demand confidence on rocky, rooty, and technical terrain. Protects rims from impact damage and prevents pinch flats. Ride Home Safe – Run-Flat Support – In case of puncture, ride up to 50 km in run-flat mode to finish your ride or reach home safely. Lightweight & Responsive – Just 100 g, delivering the perfect balance between protection, comfort, and agility. Optimized Cornering Stability – Increases sidewall support and control for faster, more confident cornering. Easy Tubeless Setup – Designed for use with tubeless tires and Vittoria Multiway Tubeless Valves (included). Compatible with 29” wheels and 2.1”–2.6” tires. The Vittoria Air-Liner Protect Trail is the ultimate MTB tire insert for riders who want confidence, comfort, and control on every ride. Designed for 29” wheels and tires from 2.1” to 2.6”, this lightweight 100 g insert delivers the perfect balance between rim protection, cornering stability, and agility. Its closed-cell Protect Foam absorbs impacts and vibration, preventing pinch flats and rim damage. In case of puncture, it supports run-flat riding for up to 50 km, so you can finish your ride or reach home safely. Includes one Vittoria Green Multiway Tubeless Valve (40 mm). Compatible with tubeless setups only.