Key benefits Reliable puncture protection for mountain, road (highway), and folding bikes. Flexible polyurethane composite conforms to tire pressure and tire shape without harming the inner tube. Thin, lightweight design protects against glass, crushed stone, and debris while preserving ride quality. What it does Tire liner: forms a flexible protective layer between the tire and tube to reduce punctures on all types of rides. Punctureproof belt: functions as a durable internal tire pad to block sharp objects before they reach the tube. Tire pad: ultralight, ultrathin construction minimizes added weight and does not affect handling or ride performance. Tire lining inner: can be trimmed to fit different tire widths and diameters for a generalfit solution. Key specifications Material: flexible polyurethane composite (conforms to tire pressure; safe for inner tubes). Weights: approximately 64 g for 700C sizes and up to 108 g for 29' sizes. Design: ultrathin profile for minimal weight and no perceptible change in ride feel. Fit: cuttofit design for compatibility with a wide range of tire sizes and bike types, including dead fly and commuter models. Compatibility and performance Suitable for mountain bikes, road/highway bikes, folding bikes, and typical commuter setups. Provides lasting protection against common road and trail hazards without degrading tube integrity or ride dynamics. Simple trimming allows one product to serve multiple wheel sizes and tire widths. Installation and use Easy to install inside most tires; trim to the required length or shape for a secure fit. Once installed, does not require adjustment and does not interfere with normal tire inflation or ride performance. Practical scenarios Urban commuting: protects tubes from glass and road debris on busy city streets, reducing flats and downtime. Gravel and light trail riding: shields tubes from crushed stone and thorn punctures on mixedsurface routes. Daily foldingbike use: adds protection for compact wheels that are frequently transported and exposed to sharp objects during storage or transit. Why choose this liner Proven puncture resistance with a flexible, tubefriendly material. Minimal added weight (64 g to 108 g depending on size) and ultrathin profile preserve handling. Cuttofit versatility for multiple tire sizes and common bike types, including dead fly and commuter models.