Hay About A Chair AAC 22The ambition of the designer Hee Welling has been to combine form, function, comfort, detail and aesthetics. The contrast of the wood base with the beautiful matt finish shell is striking. HAY About A Chair AAC22 is a chair which works just as well around the dining table as around a conference table, in a canteen or at the office. The new exciting colour versions for 2023 offer a whole new world of design options for the AAC22 Chair.