Feature 1Longer Swing Time: Balance pendulum ball could last for 1520 seconds due to the resistance of the friction, you can discover more fun ways to play it. 2Fun Playing: You can push one ball on one end strikes adjacent sending the one on the opposite end while the ones in the middle stay perfectly still, or two, or more. 3Stress Relieve: Balance ball craft is a fascinating decoration for your desktop, not only could add beauty to the room, but also relieve stress when you playing. 4Perfect Gift: Balance ball can be used as a great gift for family, friends and colleagues, so they can relieve stress when needed, while inspiring children to have fun. 5Uniform Weight: Every ball has been precisely measured for uniform and equal weight, and the plastic base provide more stability, which is simple and elegant.Item Type: Pendulum Ball DecorationMaterial: Plastic, MetalSize: Approx. 13.4 x 11.4 x 13.9cm / 5.3 x 4.5 x 5.5in(After Assemble) .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Base1 xBalance BallDecor