Newton Crib Balance Ball, Newton Balanced Science Balls with Metal Desk Decoration Pendulum Swinging Balance Balls

These newton's cradle balance balls can be widely used for home/office decoration or birthday gift. Because of its different fun ways of playing, all kids are very easy to attract by Newton's crib, a nice gift for them. Suitable for children and adults, ideal for eliminating boring time and relieving stress. It is a high-quality desk decoration for office or home.