The R-Stone bicycle inner tube is designed for those who ride urban streets or mountain bike paths. Made from high-density butyl rubber, it provides a sturdy barrier that helps protect your tires from punctures during your trips. This material is chosen for its ability to resist oxidation and temperature changes, ensuring the tube remains reliable in various weather conditions. Because it features high gas impermeability, you will experience lower pressure loss, meaning you spend less time pumping air and more time riding.