Louie was diagnosed with cystic fibrosis at 2 weeks and has been quite unwell we are hopeing to get the vest to help him long term. High-frequency chest wall oscillation involves an inflatable vest that is attached to a machine. The machine mechanically performs chest physical therapy by vibrating at a high frequency. The vest vibrates the chest to loosen and thin mucus. Every five minutes, the person stops the machine and coughs or huffs.The machine is made up of two pieces, an air-pulse generator and an inflatable vest that is connected to the generator by hoses. The generator sends air through the hoses, which causes the vest to inflate and deflate rapidly, as much as 20 times per second. This rapid inflation and deflation creates pressure on the chest similar to clapping. The vibrations not only separate mucus from the airway walls, they also help move it up into the large airways. This will prevent louie from becoming so poorly and spending time in hospital away from his family any help will be great thank you.