This Jumbo Silicone Ice Ball Mold is a must for anyone who likes to drink liquor on the rocks. The principle behind this ball is that is has less surface area and a larger mass than filling your glass with ice cubes. This means the Whiskey Ice Ball melts slower than ice cubes, keeping your drink from becoming diluted quickly. The directions are straight forward. 1. Snap the halves together. 2. Fill with water, but leave a little room at the top for expansion. 3. Place in freezer until frozen. 4. Once it is frozen, run it under water for a few seconds and pull the mold apart over your glass. 5. Fill your glass with your favorite liquor and ENJOY!