COPD
"Wonderful. First couple times it sorta wore off what I thought was too soon but that was my delivery that was wrong. After I got the hang of it works great. Easiest my day has been in a long time. Went to the store and didn&#039;t even carry my O2 with me and that&#039;s a big change for me because I am so Afraid not to have my 02 handy."