I believe the Inogen One is the best portable on the market. If you have a perscriiption you can buy direct, go to inogen.net.

I am totally biased because I work there but I do understand the market and what is avialable. Let me know if you need specific information.

Good luck

So many people nowadays are trying to get out and about; the elderly are a more active people anymore. With this new trend, there are so many people tied home because of the need for oxygen and their non portable concentrators. There are so many new portable concentrators on the market which are great for traveling in cars as well as airplanes. Please don’t let your loved one stay at home if they can be out with the family spending time with grandkids and making memories.