Suitable for playing in the sand or lawn with family or friends. Made from high quality materials and soft to the touch, it does not produce chafing and is very easy to clean. You can inflate it between sizes 4 or 5, approx. 22 cm diameter which is the official measurement. We recommend that you do not swell more than indicated, as it may cause breakage in the seams or malformations in the ball. The ball must have some flexibility because if it is excessively hard, it can cause injury or damage when hitting it, especially if you are on the beach you will not have adequate protection for hard balls.