meubles
et lumières

History:

Michel Mortier made his mark on design with his SF103 armchair, known as the Triennale, which was presented and awarded at the 10th Milan Triennale in 1954. This seat embodies the creative boldness and technical innovation that define his work. Designed from two nearly identical modules, it combines an enveloping aesthetic with a sophisticated structure.

One of the modules, featuring vertical sides, serves simultaneously as an armrest, headrest, or wrapping backrest, creating a protective shape inspired by an armadillo shell or a lobster tail. The round tubular frame, in either chrome or gilt nickel, is made from a special alloy to ensure optimal strength while giving the appearance of lightness.

The Triennale armchair is available in six versions: lounge chair, wing chair, high-back chair, shell chair, chaise longue, and daybed—thanks to the addition of a complementary footrest. This modularity is made possible by molded wooden forms covered with latex foam, upholstered in fabric or plastic material, and mounted on a nickel-plated, black, or brass base.

Despite its luxurious design and exceptional comfort, the series produced by Steiner never found a wide audience, likely due to its high cost or avant-garde aesthetic. Even today, the Triennale armchair remains a hallmark of 1950s modernism, still inspiring the design world with its sculptural silhouette and perfect balance between beauty and functionality.