Final Touch's special way to enjoy "on the rocks" ON THE ROCK: The bottom of the glass has our ROCK which creates a natural liquid motion increasing the nosing of aromas ICE BALL: Fill the included silicone mould to fill line and put in the freezer to make a single solid ice ball that outlasts traditional ice cubes. ROLLING: The shape of the glass makes rolling easy without spilling. A slight hand movement rolls the ice ball around the ROCK evenly and cools your favourite scotch, whiskey or liquor to perfection.