Diffraction Roly Poly Drum is a great sensory toy and a perfect product for exploring different surfaces, providing the user with visual sensory input so it is perfect for those that need a little bit extra. Mounted on a sturdy base this six-sided drum spins easily and offers different reflective surfaces. Watch your reflection many times as you spin the unit. The Diffraction Roly Poly Drum will also provide the user with auditory stimulation as it contains marbles and balls, making it a noisy toy when it spins.