Chinese Baoding Healthy Balls stimulate and exercise your hands muscles by moving both of them in one hand. The balls are metal, brilliant painting and design, hollow and have chiming sounding plates inside. They make crisp and rhythmical sounds when moving. Play them to relax and reduce stress. Beautiful silk covered box and instructions included. Additional Details ------------------------------ Product description: Chinese Baoding Healthy Balls stimulate and exercise your hands muscles by moving both of them in one hand. The balls are metal, brilliant painting and design, hollow and have chiming sounding plates inside. They make crisp and rhythmical sounds when moving. Play them to relax and reduce stress. Beautiful silk covered box and instructions included. Directions: 1. Remove the Baoding balls from their packaging. 2. Gently roll the balls over your hands, targeting acupressure points to stimulate relaxation and stress relief. 3. Use the balls in various settings, such as at home, work, or in the bath/sauna. 4. For best results, follow the recommended usage frequency in the user manual or packaging.