Natural Domes are made of UV HDPE (High Density Polyethylene) which is a semi-permanent material. The hard polyethylene shell creates a comfortable environment year-round. It is non toxic environmentally friendly material. Natural domes are resistant to heat and cold and completely waterproof. The dome comes complete with floor, skylight, hydraulic entrance door with internal lock, window, outdoor carpet. Additional windows can be added. The dome is easy to assemble which makes it easy to setup place to place.