Located inside a prestigious historic building in Milan, this helical staircase model Etika is suspended by tie rods made of vertical stainless steel cables, fixed to the slab at each step. The design chosen is particularly soft and enveloping: the vertical support veil is curved like a sharp blade, the steps are also rounded curved not at sharp edges, there is in addition a domed internal ornamental element that realigns in the structure maintaining the general sinuous organicity.