FROZEN COCKTAILS - For frozen concoctions, freeze Host FREEZE Martini Cups for at least two hours to keep your drink between forty-three and fifty-three degrees Fahrenheit;CHILLED MARTINI - Whether you`re in the mood for shaken or stirred, keep Host FREEZE Martini Cups in the freezer so they are ready to go when you are. dietary cooling gel;PROPRIETARY COOLING GEL - Inside the BPA Free Acrylic walls of Host FREEZE Martini Cups lies our proprietary cooling gel. This gel was precisely engineered in house to keep any beverage the perfect temperature for hours;ADDITIONAL FEATURES - Each cup is constructed with an insulated silicone band for comfortable handling. Cups are dishwasher safe but we highly recommend placing them on the TOP RACK;SET OF TWO GLASSES - The set includes two Host FREEZE Martini Cups. Each cup can comfortably accommodate 9 ounces