Powerball is a mighty workout for your fingers, hands, wrists and arms. A great way to add a new dimension to your fitness routine. This would make the perfect gift for someone who is interested in sport. Whether its improving your skill at sports, gaming or music . Powerball develops strength and dexterity in the fingers, hands and arms. Great for cricket, golf, guitar, motocross, climbing, piano, tennis, drummers, rowers, martial arts, cycling, badminton, hockey, bowling. Provides soothing rehabilitation for broken wrists, hands and arms, CTS, RSI or any part of the limb requiring more flexibility and circulation. Just the size of a tennis ball and weighs under 300grams. Size H23cm, W8cm, D16cm. Weight 0.34kg.