Protect yourself from flats with Bontrager's Self-Sealing tubes that instantly seal small hole punctures. And, a 0.6mm wall thickness keeps these tubes on a diet.
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).