The Biosphere S is a tribute to the inventor of the "geodesic" dome; my hero and visionary Buckminster Fuller. In 1967 he built a dome, constructed with triangles and hexagonal shapes as the United States pavilion for the world expo: the Biosphere. Our Biosphere S is a lot smaller, meant to grow seeds or store your bought potted herbs. With the ventilation valve in de shape of the XALA logo you can open or close the Biosphere S. The Biosphere S is available in White, Yellow, Green and Blue.