 Compressed air was contained in a cylinder carried on the diver's chest in a harness, delivering air to the full face mask at a pressure controlled by a hand-operated regulator.Excess air, and the diver's exhaled breath, escaped by slightly lifting the edges of the mask.The first diving club was created in France in 1935 by le Prieur and Jean Painleve, it was called the "club des scaphandres et de la vie sous l'eau", the club for divers and life under water.