These wine bottle stoppers provide an air-tight seal to prolong and preserve opened bottles of wine. It is a kind of soft, suitable for all bottle types, like red wine bottles, beer bottles, soy bottle , vinegar bottle and so on. Soft and highly resilient, non-stick, eco-friendly,Flexible, and portable, easy to store and port. Constructed of silicone stopper that 't rust, crack or fade. Dishwasher safe and reusable. and beautiful design, it is easy to clean and store Quality: each product we have 100% inspected before shipping Just insert it in the opening and the bottle is sealed tightly.The low- and air-tight seal allows you to store bottles.sideways in the refrigerator without worrying about spillage. The cone-shaped stopper is primarily used for wine bottles,but works equally well for oil, beer and other bottles. It keeps the beverage or liquid in the bottles fresh longer,than traditional corks by preventing unwanted odors.An added Advantage is these bottle Cork are odorless, so once the wine, beer, or oil is finished, they can be reused. colour: black Material: Silica gel Package Contents: 5 * wine stoppers Only the above package content, other products are not included. Note: Light 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.