Furniture Design Cartier Sofa by Luis Zhang Practicability: The all series include two kinds :with backrest and without it. So this chair is multifunctional. Environmental conservation. All material conforms to national standards which produce nothing that is poisonous to environment. Aesthetics: The whole design is soft and mellow with yellow lines on edge to make it more refinement. Solid wood feet in yellow color echoes with the yellow lines, making it more beautiful.