This set from Metrokane includes two 8oz freezable whiskey glasses with silicone bases that protect hands and tables from excessive condensation. Once frozen, the whiskey glasses instantly chill drinks to 10F (-12C). The liquid between the walls of the double walled borosilicate glass freezes to keep the ice on the outside of your drink. The liquid is food safe and gets cold in just one hour in the freezer. The Rabbit freezable whiskey glasses come in a beautiful gift box.