Have seen many champagne closures tried that also were not even particularly nice mostly. This keeps closure of WMF what it promises. Just set up and press down with one click and he sits. To open just push the button. The shutter will not budge and the champagne was the next day just as sparkling as when you open the bottle. (Really only for champagne bottles, wine bottles on it does not fit, but is indeed champagne bottle and not Champagne and Wine Stopper: o)) ....) Definitely recommended and worth the money!