Leaf Thermometers are made of temperature sensitive paper. If the room temperature is between 20-25°C (68-77°F), then the leaf remains its natural green color. But if it gets colder the leaf will turn brown, and if hotter a bright yellow. They come in 2 sizes, large or small and are perfect for scattering around your home or office as functional decor.
Designer: Hideyuki Kumagai