The armchair 400, designed by Alvar Aalto in 1936 and better known as Tank, is a milestone in furniture design. Alvar Aalto designed the Tank for the Milan Triennale. The chair attracted much attention and was awarded during the fair.
Previously Aalto designed all his chairs for a certain architecture destination, but the Tank was designed as commission work for the Triennale. The sturdy seat and the wide armrests offer a comfortable seating experience and give the chair its characteristic appearance, which is reminiscent of a tank. Of the original upholsteries, the zebra upholstery remains the favourite but many colours and options have been introduced over the years.