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Reversed Hole is a natural humidifier with a compact and modern design that excludes unnecessary functions. The difference between Hole and existing humidifiers consists in its application of the structural principle of traditional Asian teapots, which make use of differences in atmospheric pressure to prevent water spillages even when they are upside down. The water inlet is located at the bottom, to hide the parts that the user does not need when using the humidifier. Furthermore, Holes all-in-one structure, that can contain water without an opening or a closing unit, provides convenience, as well as the interesting feature that it does not spill water even when held upside down.