Newton's Balls trendy and comfortable design allows you

and comfortable design allows you to wear our Neck Pulse Massager™ anytime anywhere

Soft yet thick memory foam helps hold your neck and held upright for a strain-free nap

With our super set you can determine your weight yourself

It's very convenient to use and don't need to worry about forgetting to turn off it

Suitable for walking

Newton's Balls trendy and comfortable design allows youThe motion of this 5 ball cradle is the most addicting way to demonstrate Newton's law of conservation of momentum and energy, which makes it a great teaching tool, in addition to being fun to watch. And we've equipped each frosted glass sphere with LED, it's even more amazing. Lights react based on their position. Start a kinetic chain reaction with one ball and see how the others change color in response. One from each end set the LED to a single