These organic soapstone shot glasses keep liquor chilled in the same way our whiskey rocks do, but in reverse. While our whiskey rocks cool your drink from the inside out, our Tulip glasses cool from the outside in. Take the glasses from the freezer and enjoy your favorite shooter out of an icy shot glass. The Tulips lower liquid temperature more than 30 degrees with no dilution or change in taste. For sake lovers, these shot glasses can also be heated in the microwave to keep sake warm til the last drop. Includes a beautifully designed care care for gifting, that is not available anywhere else, filled with tips and great info.