Tetra chair by Julia Göransdotter was envisioned as transformable coal, as it turns into one when you are not sitting on it. It gives the appearance of a non-functional sculpture when it lies unused in your house. Made out of waste materials, it is completely recyclable. The idea behind the creation was to make an object that could be changed and used in different ways, depending on the preferences. Its folding characteristics allow you to adjust the chair according to your seating positions.523082