The Hoberman Mini Rainbow Sphere is an expanding & contracting ball It cleverly combines mathematics & geometry to create a surprising motion that fascinates children & adults alike Why not give these tricks a try? Flip Down Hold the closed Sphere by one hub on top of your open palm Flip the Sphere over & watch it open then flip it back to the top of your palm & let it close When you’ve mastered this try it with your other hand Open Bounce Hold the Sphere fully open with two hands & throw it down to the floor If you spin it towards you it will bounce back Two-Handed Open-to-Close Spin Hold the opposite hubs of an open Sphere between your thumbs & first two fingers Using your thumbs twirl the Sphere backwards as you close it & push in so the hubs are spinning on the palms of your hands This takes practice but looks really cool Floor Spin Open the Sphere & place it on the floor Holding the upper hub spin the Sphere & watch it move Try spinning it on a hub then a triangle then a pentagon – notice the different way it moves on each of these shapes Product is approx 56 inch (14cm) tall & expands to 12inches (30cm)