Just pop our Martini FREEZE in the freezer for 2 hours, pour your favorite martini and enjoy! Our proprietary cooling gel freezes solid inside the double-walled chamber, providing thermal insulation that keeps your drink cold for longer. For frozen concoctions, freeze HOST Martini FREEZE Cooling Cups for at least two hours to keep your drink between forty-three and fifty-three degrees Fahrenheit. Whether you`re in the mood for shaken or stirred, keep HOST Martini FREEZE Cooling Cups in the freezer so they are ready to go when you are. Inside the BPA free plastic walls of HOST Martini FREEZE Cooling Cups lies our proprietary cooling gel. This gel was precisely engineered in house to keep any beverage the perfect temperature for hours. Each cup is constructed with an insulated silicone band for comfortable handling.