They are not only massage balls for hands, but also a kind of stress relieve balls. You can play with them when you feel bored. They can help you spend time. Handball in the rotation will massage the fingers, pressing acupoints in your palms. Features - Color: As shown. - Material: Resin. - Size: About 5x5x5cm. - Made of materials for safe and dueable use, it is good for health especially for elders. - Playing with fitness ball, focus on people's thoughts and hands, relax brain, to be with a clever heart and deft hands. - Making the fingers, hands stretch flexible, promote hand muscle movement. - An elegant, a healthy, a perfect gift for elder people. - It can help keep you hands skin smooth and delicate. Portable size and easy to carry out.