The Spiros pulmonary delivery technology is designed to deliver a relatively consistent drug dose to the lungs over a wide range of inspiratory flow rates - the rate at which a patient can inhale. Inspiratory flow rate can vary depending on a patient's health, effort or physical abilities.

The Spiros inhaler is durable, light weight and compact. Designed to be carried and used by the patient, it is small enough to fit into a purse or a shirt or pants pocket.