DescriptionHand therapy exercise balls build strength in the fingers, hands, wrist and forearms while reducing stiffness and joint pain by stimulating blood circulation in the forearm and hand. Perfect for athletes, musicians, office staff and students, as well as those with arthritis, carpal tunnel and rehabilitation needs.Features-Material: silicone -The shape and surface of the ball are processed with uneven surface, which can be firmly attached to the hand when held in the hand. -The softness is moderate, the massage is comfortable, and it provides you with a good experience. -Small and lovely design, it is recommended as a daily stress-relieving product, and also recommended as a gift! -You can easily hold these finger training balls wherever you are, very practical. -It is small in size, light in weight, does not take up a lot of space, and is easy to carry.