Vòng Rượu Cầu Vồng và Nút Chai

The stopper actually seals tight enough that I don't worry about an open bottle going flat overnight. And with eight rings I can finally keep track of whose glass is whose at dinner instead of everyone guessing.

The eight rings snapped onto our glasses without slipping, and I love that each color is distinct enough that nobody mixes up their drink. The stopper seals tight enough that I can leave an open bottle on the counter overnight.

The little rings actually stay put on the glass stem instead of sliding off, and the colors make it easy to remember which pinot is mine at parties. The stopper seals tight enough that a half-empty bottle keeps fine overnight. Handy little set for the price.