Host Cooling Cup Set of 4 Plastic Double Wall Insulated Freezable Drink Chilling Tumbler with Freezing Gel, Wine Glasses for Red and White Wine, 8.5 oz, Translucent Magenta

You put them in the freezer About four hours before you're going to use them and the Tumbler stays cold for your wine or whatever beverage you use it for. I bought the colors so each individual can tell whose glass is who's. I had these and this is a gift as my daughter wanted them after she saw mine and how they worked love it. Great for entertaining or every day use…