Continental tubes are made of seamless butyl rubber and are individually tested for top quality.
Size: 29 x 1.75 - 2.5
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).