Continental 700C/28 High Quality INNER TUBE – 42MM LONG VALVE PRESTA (S42) fits bicycle wheels sizes of 28", 27" and 700c.

S42 - 42mm Presta Valve  

These inner tubes are made from high quality butyl material, butyl is an elastic and airtight synthetic rubber. All Impac inner tubes are 100% recyclable and are produced using 20% recycled old tubes. 

The valve nesting is reinforced with dual thickness material.