Perrier: The cool hat by Mazarine

Mazarine has created a new witch's hat to keep bottles of Perrier cool as fans of the premium bottled water brand enjoy the new Harry Potter Wizards Unite AR game, which launched on Friday.

As the app launched over the weekend, thousands of players across France are taking to take to the streets armed with their smartphones in search of magical creatures.

To quench their thirst for the extraordinary and offer them the best conditions for exploring and tracking down magical creatures, Perrier is introducing the 'Perrier cool hat', an extraordinarily refreshing wizard's hat to keep bottles of Perrier ice cold.

The idea is simple: imagine a 27cm high wizard's hat – open the tip and, inside, it’s isothermic – the perfect sized space to hold a Perrier bottle. Fans of wizards and magical universes will be thrilled.