The purpose of using a stopper is to keep the wine and beverage fresh. This wine and bottle stopper is made of silicone and stainless steel, features ridges in the middle to keep the wine and beverage sealed and out of leaking. The flat top is great place to expose your logo in front of thousands of users. Great item for home, kitchen, club, restaurants, bars, etc. Colors:Assorted. Size: 62mm x25mmx10mm.