No ice is needed with these Refreezable Iced Acrylic Plastic Martini Glasses. Made from Durable break-resistant acrylic plastic, sealed within the double walls is a non-toxic refreezable liquid. Simply place these refreezable Acrylic Plastic Martini Glasses upside down in the freezer a few hours before use - and say good-bye to drinks watered down by melting ice cubes. Refreezable Iced Martini Glasses are also great for Shrimp Cocktail, Mousse, Ice Cream, and Sorbet! Refreezable Iced Acrylic Plastic Martini Glasses, 7" tall x 5" diameter. Hand wash.