The champagne cork is made of metal and silicone. The metal surface is painted black to effectively prevent rust and corrosion of the product. The silicone part is very safe and does not affect the quality and taste of the wine.The double buckle design straps the bottle cap tightly onto the bottle, and the high-quality silicone parts fit the bottleneck, thus preventing the loss of odor.The handling is very easy. Simply insert the silicone part into the bottle and flip the flap down to lock it onto the lower lip of the champagne bottle. The wine bottle stopper can be used multiple times, which is convenient and environmentally friendly.The work is excellent. The combination of black matt metal and milky white silicone makes the entire product look very delicate. Not only can it be used by yourself, but it is also a good gift for family and friends.Small in size, easy to store and use. The surface of the wine bottle stopper is smooth with no sharp edges. Hence, it is safe to use. Easy to clean, just rinse with water and wipe dry.Product Name: Wine StopperType: Bar ToolUsage: Wine Cork; Wine preservativeMaterial: iron + silica gelColor: blackPackage Content:30 x sparkling wine closuresOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.