Flexible tube, preferably charge air tube for vehicles

The hose has a corrugated portion (2) and a tubular portion (3). The corrugated portion is formed in one piece with the tubular portion. From a stretched position, in which the corrugated and tubular sections are arranged one behind the other, the tubular portion is fitted into the corrugated portion by turning it inside out, so that it lies within the corrugated portion. An independent claim is included for a method of manufacturing a flexible hose.