The design of “The Dark Knight” filter-free air purifier is inspired by a knight’s armour. It showcases an air outlet that tapers towards the middle as well as ventilation slots, which together are reminiscent of a protective visor. The tall, slim shape, the black colour and robust materiality all lend the device an elegant and independent appearance. Its aluminium base has been produced in one piece. The air purifier is easy to use and very quiet in operation.