The SEYOUN 12 inch inner tube is a reliable maintenance accessory designed for standard, city, or folding bicycles. Crafted from natural rubber, it features a reinforced structure that helps the tube withstand high compression and mechanical shocks during your rides. To ensure a balanced ride, the design is optimized for uniform inflation, a detail highlighted by the green-red graphic markings on its red and orange cardboard packaging. This makes it a practical choice for cyclists looking to keep their smaller wheels in top condition.