Preserve the flavors of your favorite red wine or save that crisp white for later with the OXO Steel Expanding Wine Stoppers. Simply press down on the flat top with stainless steel accent and the silicone seal expands to fit your bottle just right. The seal keeps air out of wine, while also preventing leaks and drips. The Stopper is designed to expand to fit your bottle just right, and can be stored on refrigerator doors or even lying down on the shelf.