The Volumatic Spacer Device is designed to provide a more effective treatment from Metered Dose Inhalers (MDI's). The Volumatic Spacer Device is designed to increase the proportion of each dose reaching the lungs where it is needed rather than the back of the throat or other areas where it may cause side effects. The device works by increasing the amount of fine particles produced by the MDI in the chamber, thus maximising the amount of the dose which is delivered to the lungs Simple-to-use and easy-to-clean For accurate and effective delivery of your inhaled asthma medication Available in adult or child size