EAELLC RATWS001 Reusable, Air Tight, Sealed, Pourable, Silicone Wine Stopper and Sealer, Set of 4 Screw in collar for air tight seal to keep your wine fresh Sold in a set of 4, one of each color: Green, Yellow, Blue, Orange Removable parts that allows the stopper to say on while pouring Made of 100% Non Toxic Silicone & Can be used on others bottles like Olive Oil Stainless steel ring for added stability