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 favorite scotch, whiskey or liquor to perfection • Holds up to 8oz of your favorite scotch, whiskey or liquor