Do you like cold round balls? Then the Ice Ball Mould Tray is for you! Get perfectly spherical ice balls that are perfect for your whisky or just for any drink that you want to keep cool while pretending to look smart. Simply clip the 2 parts of the mould together, fill it up with water from the little hole at the top and let it freeze overnight. Crack it open and you too can have cold round balls in your drink! Perfect!