Using a quality inner tube is the key experiencing to less frequent punctures and the ability to ride on rougher terrain with confidence. This inner tube VT-A26 from XLC is a quality tube manufactured specifically for the demands of city, trekking and mountain biking. It is available to buy in two sizes, each for 26” wheels. The sizes of tyres the inner tubes are available for are as follows, 26 x 1.5/2.5 40/62-559 and 26 x 1.0/1.5 25/40-559. The valve length is 35mm so it is advised you only use these inner tubes on wheels with a shallow rim depth below 35mm otherwise it will be necessary to use a valve extender.