If you are on 3LPM of O2 or less the portable concentrators are a godsend. I had my doctor prescribe the Airsep Freestyle , my insurance approved it, and I'm now more active than before I went on oxygen. The activity, as well as not having to depend on others, has improved my health tremendously, no...

If you're on 3LPM or less you may wish to try out the Salter #1616-4 "micro" cannula. It's very lightweight and thin, and no flap. I've been on supplemental oxygen since I was hospitalized in April (8LPM) and absolutely hated the various cannula I've tried. I've used the Salter #1616 for the past fe...