Size: A ball with a diameter of 13cm, weighing about 15g, and a length of about 18cm (8 inches) without inflation A ball with a diameter of 23cm, weighing about 27g, and a length of about 30cm (14 inches) without inflation A ball with a diameter of 30cm, weighing around 32g, and a length of around 35cm (16 inches) without inflation A ball with a diameter of 36cm and a weight of about 50g is about 43cm (20 inches) long without inflation A ball with a diameter of 40cm, weighing about 70g, and a length of about 50cm (24 inches) without inflation