The two versions, depending on their intended use - whether indoor or outdoor - differ in some significant details. In the indoor model, the resting surface is slightly concave, with the edges slightly raised, while the outdoor version was designed with a flat surface flush with the edge, to allow the rain to slide off the surface. The surface finishes are also different: glossy white or dark wood for the indoor version, steel for the outdoor version.
Versatile in its intended settings, it is also designed to be tilted in several positions, providing different types of lighting and hence affording different atmospheres, depths and effects. The hemispherical body, made of waterproof and unbreakable polyethylene, remains perfectly stable even when it is tilted by 15°.