Wine glasses are just that glass, not metal, simply because wine tastes best out of a glass. The problem comes when we want to drink chilled wine at a BBQ or a pool party. Metal stemless cups give the wine a metal taste. The wine glass and sleeve features it's lightweight, it's double-walled insulated, and it secures your stemless wine glass (the glass included in the package). It is created with a novel, innovative worldwide pending patent technology that will keep your wine chilled with no sweat on the outer wall. Product Features: (Model STL242BS)