Ensure outstanding riding reliability and optimal pressure retention for your trekking, cross, or gravel bicycle with this premium-grade inner tube. It is precisely engineered for the popular 700c (28-inch) wheel size and perfectly accommodates tire widths ranging from 35C to 43C. Crafted from highly resilient, top-quality rubber, it delivers enhanced resistance against punctures and pinch flats on urban asphalt and rugged gravel paths alike. The tube comes equipped with a sporty FV (Presta) valve, featuring an extended 48mm length that easily clears deeper or double-walled rim profiles. This setup guarantees a tight, secure seal, preventing any air loss during long-distance and intense cycling journeys.