INCLUDES 1 RANDOM COLOR - These balls are a classic Chinese fidget toy. These are called health balls, or Baoding balls, and are hard smooth balls with a jingle bell inside. The purpose of the balls is to be a calming stress reliever toy. Place both balls in one hand and rotate them around and around. The soothing motion and gentle sound makes it a very soothing stress reliever. The goal is to roll them in your hands without them touching. The balls have a classic dragon design on them and come in a decorative storage box. Balls are 1.5", and the box is 3.75" x 2" x 2". Baoding balls are a Chinese invention designed to help relieve stress while building finger dexterity and wrist and forearm strength. Known also as Chinese therapy balls or harmony balls.