A 100% drug free lung expansion device used to help strengthen the lungs, making breathing stronger and easier. Single patient use. Not for use in patients with a ruptured eardrum or any conditions affecting the ears. Not for use in patients with high blood pressure or signs of heart failure after Respiratory Muscle Training. This product may not be right for you. Always read the label, warnings and instructions for use. The product advice is general in nature and does not replace the need to discuss your needs with a General Practitioner or other health professional.