S Shaped - Simple, Stylish, Sustainable Shelving Is it an S?! Or is it a five?! Turn it around and it could be a two! So much time, so many options. A minimalist bookcase in sustainable mango hardwood, given real warmth but its dark walnut stain; this simple functional design adds a stylish twist to an otherwise everyday object. The S Shape Bookcase is practically demanding to be dressed with an array of good books, our Gold Humble Table Lamp and a strong cup of coffee!