The Continental 700 x 20/25c Inner Tube with a 42mm valve is perfect for road cyclists. Made from durable butyl rubber, this inner tube offers excellent air retention and puncture resistance. It fits tires sized 700 x 20c and 700 x 25c and is designed for quick and easy installation. The lightweight design keeps your bike agile, making it suitable for both casual rides and competitive cycling. Ensure reliable performance with this essential cycling accessory.