Relieves stress and anxiety: With the help of the anti-stress ball, you can improve blood circulation and blood circulation in your hands through simple hand movements, improve your concentration, significantly reduce your daily stress and anxiety, and give you an extremely pleasant tactile experience Rehabilitation and prevention: Hand therapy kneading ball not only improves your grip and hand, finger and arm strength, but also helps you recover from arthritis, carpal tunnel syndrome, tendinitis and post-operative tendon injuries Perfect for use at home, in the office, on the go Three intensity levels: This package includes anti-stress ball in 3 different colors, 3 different intensity levels, the resistance levels of yellow, green and blue anti-stress ball are 15kg, 20kg or 30kg You can choose stress balls with different resistance levels according to your needs to build up your hand strength Unique shape: The egg-shaped hand massage ball fits comfortably in your hand, looks attractive, is small and portable You can insert it and take it out anytime and anywhere preferably for training hand strength and decompression Suitable for everyone: The hand massage ball is suitable for the elderly, children and adult men and women with different hand types, undoubtedly the best choice for athletes (climbing, tennis, baseball tennis, golf, shooting), musicians (guitar, piano, violin), fitness instructor