1 big ball and 2 medium-sized balls. Specially designed and manufactured in Germany, exercise balls have a special density and are designed to work with the body, regardless of age. The balls are placed under the trigger zones of the body and gently affect them, relaxing and healing the body. - Relieve pain and clamps in any localization - Gently stimulate circulation in deep layers of fasciae If you already have balls and would like to expand your set with an additional ball, please contact us to purchase balls individually.