Stopper for bottles

A stopper for bottles, especially for closing uncorked wine and champagne bottles, which includes:

• an elastic deformable sleeve member having a mantle section and a closed bottom section and an open top section, said top section of said sleeve member comprising a radially outwardly extending flange for placement onto the neck end face of the bottle to be closed and also comprising a radially inwardly extending flange, and a handle member coaxially arranged with regard to said sleeve member and comprising a cap and an inner member including a rigid longitudinally extending cylindrical piston and a connecting rod rigidly connecting said piston to said cap, the outer diameter of said piston being slightly less than the inner diameter of the bottle neck portion to be closed by said stopper, and the wall thickness of said sleeve mantle section in non-deformed condition of said sleeve member being greater than the thickness of the annular gap between the outer periphery of said piston and the bottle neck section of the bottle to be closed by said stopper.