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ARS Design

Thore Lassen & Søren Nielsen studied at the Aarhus School of Architecture. They graduated in 1978 and in the years that followed they participated in a research project at the Danish Ministry of Education concerning school furniture. They founded the company ‘ars design’ in 1981 and worked together until Søren Nielsen died in 2004.


Must is designed by Søren Nielsen & Thore Lassen and is the perfect balance between passion, design and functionality. The Must chair is ideal for meeting rooms, conference halls, canteens and educational institutions – everywhere where people get together either for professional purposes or informal meetings.

The Must chair is with its dynamic design and unrivalled functionality the perfect background for efficient, beautiful and slightly more inspiring days – every day.

Rail chair

Rail is designed by Søren Nielsen & Thore Lassen and stands out for its light and airy expression. Ergonomics, timeless design and durability are the ideas behind the characterful design language and the uncompromising functionality that characterizes the chair.

With Rail, there are no superfluous details, only a distinctive and dynamic design that fits into many interior design solutions.