Features improved airflow dynamics, ergonomic design, comfortable antibacterial mouthpiece, soft-touch nose clip, easy-to-read resistance level indicator. Who can benefit? People with a respiratory condition such as asthma (including exercise-induced), chronic obstructive pulmonary disease, bronchitis, cystic fibrosis. Suitable for seniors and for children aged 10+ under adult supervision. People with a debilitating condition such as heart failure, heart disease, spinal injury. People unaccustomed to regular physical exercise. Anyone who gets out of breath easily. Ideal for: People who, because of illness or advancing age, are restricted by shortness of breath.