The Toono is the yurt's most important part, it is the center and the source of light in the yurt. Made of Siberian pine, the Toono is the connection between sky and earth. It is fitted with 4 basic window frames in its front half, three of them covered with clear vinyl and one with a basic stove pipe opening. The back half is open to the sky to do what works best for you. Our mosquito netting is a great option.