This patio heater is very special. Neither gas nor electricity produces the warming, but only the power of the Sun. The solar heat is stored during the day in slats that swivel. Once the Sun has set, the slats point to the ground and give off the heat evenly and gently. The slats are rotated using igus® plastic plain bearings, which are mounted in the steel frame. These bearings are extremely robust and not at all vulnerable to weather or temperature.