Continental Supersonic Tubes are super light so you enjoy less rotating weight for easier acceleration and climbing. Made of seamless butyl rubber, they are individually tested for top quality.
Size: 700 x 18-25c
Schrader valves are identical to those found on car tires. These valves are generally used on hybrid and children's bikes. Presta valves, which are found on most road and off-road bikes, are longer and thinner and feature a threaded tip, which must be opened to inflate (turn counterclockwise).