- Ultra-Lightweight: Weighing only 45g, this bicycle tube is significantly lighter than traditional butyl rubber inner tubes, saving you up to 200 grams with a pair. Enjoy a lighter ride and reduced strain on your bicycle. - Versatile Compatibility: This 28'' Gravel and 29'' MTB bike tube fits a wide range of tire sizes, including 700 x 32C-47C and features a 45mm French valve length, making it adaptable for various biking needs. - Enhanced Safety: Constructed from a special new TPU material, this tube offers superior puncture resistance. Its seamless design and mold-cured vulcanization ensure a uniform shape, providing a smooth ride and reliable handling. - Excellent Airtightness: Equipped with a high airtightness 45mm French nozzle, this inner tube minimizes air loss, allowing for up to six months of use on a single inflation. Use Scenarios: 1. Ideal for long-distance gravel rides where weight savings can enhance performance and endurance. 2. Perfect for mountain biking, providing reliable puncture resistance on rugged trails and varied terrains. 3. Suitable for commuting, ensuring that you stay on the road longer with minimal maintenance needed. This product combines functionality, durability, and performance, making it a smart choice for cyclists looking to upgrade their gear.