The bottom of the glass has our ROCK which creates a natural liquid motion increasing the nosing of aromas. Fill the included silicone mould to the fill line and put into the freezer to make a single solid ice ball that outlasts traditional ice cubes. 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.
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