Chinese Souvenir: Health Balls (Fitness Balls) - Phoenix These balls make a sound when shaken, a calming resonance. Each ball is about 5cm in diameter. The box is 13.5cm wide, 7.5cm deep, and 6cm high. This is an old item, so the box has scratches, stains, and damage. The phoenix and dragon on the balls have gold trim and a glossy finish. This item has an antique feel. Please understand this before purchasing.