Take the worry out of entertaining with these versatile and reusable cups. HOST®'s proprietary cooling gel is precisely engineered to keep your beverage perfectly cold for hours. After just two hours in the freezer, the Beer FREEZE™ is ready to do the hard work for you.For a frosty brew, freeze HOST® Beer FREEZE™ Cooling Cups for at least two hours to keep your drink between forty-three and fifty-three degrees Fahrenheit.