Food grade materialDurable and safe-the interior is made of food grade silica gel and stainless steel, reusable, recyclable materials, and harmless to the environment when disposed of or incinerated.wine accessories.^4 colors wine bottle stoppersOrange, blue, black and purple, our eye-catching colors can be used to match your event theme, adding joy and brightness to your bottle, whether it is for daily use or special occasions.wine stoppers for wine bottles.^Wide applicabilityThe stopper is suitable for most size wine bottles, whether it is wine bottles, beverages or any other kinds of wine, but also suitable for oil bottles, beer bottles, bean bottles, vinegar bottles and other bottles.^SealabilityKeep fresh-Compared with traditional cork stoppers, this kind of silicone stopper can keep the beverage or liquid in the bottle fresh for longer, preventing peculiar smell and bubbles from penetrating into the bottle and damaging the contents of the bottle.wine bottles.^Matters needing attentionChampagne or carbonated drinks are not recommended, because the pressure rises, the stopper will be forced to pop out. Do not shake the bottle vigorously before use. Put them on the ridge so they don't pop up suddenly.^