During the mid-twenties, tubular steel won favor among avant-garde designers as a preferred material for furniture design. The most important designs for tubular steel, now regarded as classics of modern furniture design, were created within the course of just a few years. It was Mies van der Rohe who first discovered the elasticity of steel tubing and utilized it as a structural principle. The model was produced both with and without armrests under the names MR 20 and MR 10, respectively. The tubular steel furniture of the 1920s represents a rejection of the conventional, overladen bourgeois interior of the time, filled with massive furniture and decorative trinkets. The transparency and structural clarity of tubular steel furniture embodies a new ideal in architecture and design: interior space flooded with natural light.