Over the past decade, the city has changed, green modes of transportation are overtaking the car, vegetation is increasing its presence, riverbanks are being upgraded, and public spaces are being looked at as real living and sharing spaces in which one must feel good. TF urban partnered with Marc Aurel to design a chair that responds to this evolution. 21s offers both simplicity and elegance of line, but also plenty of innovation. This chair expresses lightness, blending into the landscape while adding a touch of elegance that upgrades the space. The product also creates a new offer, with its base available in a choice of stainless steel, wood or ceramic, all interchangeable.