Foldable 3D Mirror Kaleidoscope. When looking at the kaleidoscope, you don't need to rotate the entire kaleidoscope, just slightly twist the kaleidoscope's head or stretch it out to see thousands of changes. Instructions: This is a worldwide reflective dynamic kaleidoscope. The special feature of this kaleidoscope is that the material is made of plastic, and the inner pattern changes every time it is rotated. Rotating a hundred times yields a hundred patterns; one fun kaleidoscope is enough to satisfy a child's curiosity. Shrinks to approximately 20 cm in length. Kaleidoscopes are a way for children to find joy. Kaleidoscopes can train your eyes and relieve eye strain. This simple toy is an excellent gift for your friend or child. Choking Hazard: Small parts, not suitable for children under 3 years old, students and office workers who work in front of computers and need to rest their eyes.