Continental Race 28 700 x 25-32c Bike Inner Tubes - Presta 42mm Long Valve (Pair) - Wide.Continental has a history of success going all the way back to 1871, when the company was first established in Hanover, Germany. Wherever people strive to turn their ideas of mobility into reality, we're ready to support them. It's a common thread running through every era of our history; our technologies, systems and service solutions make mobility and transport more sustainable, safer, more convenient, more customised, and more affordable.