All drinks are "on the rocks" when they are chilled down with these cool new Cold Boulders - Stone Cold Reusable Ice Cubes. These fun granite-inspired reusable ice cubes are shaped and colored to look like real boulders and are filled up with purified water that can frozen over and over again to keep your drinks stone cold. They won't melt and dilute your drink like regular ice cubes and don't impart any taste like a real stone would. They come in a set of eight boulders and are dishwasher safe.
Cold Boulders - Stone Cold Reusable Ice Cubes