Learay 2 Pcs Black Obsidian Baoding Balls, Traditional Chinese Balls for Hand Therapy, Health Exercise Massage Balls with Carry Pouch for Stress Relief Hand Exercise Meditation(Black/1.57 inch)

What's the ball used for: Baoding ball is traditional folk fitness equipment, designed to do hand exercise, make your thoughts focused on the hand, strengthen your hands and keep them flexible Premium Natural Material: Made of natural marble, these health balls are finely crafted with traditional cutting process, makes it smooth and glossy, giving you a comfortable experience Good for all: As a hand exercise tool, these Baoding Balls are perfect for adults, children and people who in post-surgery rehabilitation. Regular hand rolling promotes blood circulation and relieves physical tension through controll with the hand pressure movement Different Size: 1.57 in is for small to average hands. 2 in is for larger hands or more skilled users A Great Gift: Originating from Baoding, China in the Ming Dynasty, Baoding balls are great for personal collection and serve as a exquisite gift for others