Final touchs 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 l