Get a bulk saving with our special multipack offer. The Continental Cross 28 700c Presta Inner Tube is the same high quality as standard Race tube but wider to allow for cyclo cross tyres. They are designed to fit tyres from 32c to 47c, ideal for cyclocross, gravel, touring and hybrid tyre. Available with either a 42mm Presta valve, or a 60mm valve for bikes with deep section rims.