Our proprietary cooling gel will maintain the cold temperature for hours while the insulated silicone band makes it easy to hold. Inside the BPA free plastic walls of the HOST® Ice Cream FREEZE™ Cooling Bowl lies our proprietary cooling gel. This gel was precisely engineered in house to provide the perfect temperature for hours. Each bowl is constructed with an insulated silicone band for comfortable handling. Includes TWO HOST® Ice Cream FREEZE™ Cooling Bowls that comfortably accommodate 18 ounces of chilled goodness. For chilled treats, refrigerate HOST® Ice Cream FREEZE™ Cooling Bowl for at least two hours to keep your snack between fifty-eight- and sixty-degrees Fahrenheit. For frozen treats, freeze HOST® Ice Cream FREEZE™ Cooling Bowl for at least for at least four hours to keep your snack between forty-three and fifty-three degrees Fahrenheit. For the best results, place the Ice Cream FREEZE™ upside down to allow the gel to evenly spread. Hand wash only.