Magic Shapes stimulate imagination in a unique way. Great for children and adults alike this irresistible toy features gentle magnet receptors around the perimeter of the pieces (circles are pop-in and not magnetized). Open ended play is an important and encouraged type of play for the child doesn t have a right or wrong way to build and there are no expectations or possibility of failure. Magnetic receptors are strong enough to hold Magic Shape pieces together yet not strong enough to be a hazard. Magic Shapes stick together to create gravity defying designs. It s like doodling in 3D and great for abstract thinking. Comes in an easy clean-up jar.