Convertible 2-in-1 Oxygen Backpack for Portable Oxygen Concentrators, Inogen One G3, G5, Oxygen Machines, Accessories Oxygen Backpack with Breathable Mesh Gray

Nice bag and well made. Didn’t fit my my Phillips portable.

This is a poorly made product, I do not recommend it at all. It does NOT “fit” the Inogen One G5. Oh it will fit inside of it but there is a good 3inches too wide. It causes my G5 to slide back and forth, quite frequently causing the unit to slip off of the battery to disconnect, turning the G5 to turn off. The grommet where you plug in the unit isn’t in the correct spot and fell completely off the bag the 2nd time I plugged it in. The ventilation areas are in the wrong spots causing the unit to frequently over heat.All in all this was a horrible purchase and I will never spend the little bit of money I do get with this product.

I’m so disappointed! I ordered gray for a reason. The one I received has more black than it does gray. The front ventilation panel is made out of a rubber type material and as you can see, is black. This backpack doesn’t look like what I ordered. My portable concentrator doesn’t fit real well either. I can fold the top flap over & secure but just barely. Just 1/2 to 1 inch taller would be a perfect fit.I’m still giving it a 3 because it is a very well made backpack & has some cool little pouches.

Stay away from this backpack. After only 2 days of use, stitching is unraveling and the eyelet for the O2 is half pulled out. The "bottle holder" on the side is a joke. It's quality is poor and does not match it's price point.replacement bag is much better, they took care of my issue quickly and professionally.

Great fit

There are no side vents

Description said it would fit the caire freestyle and it almost does but not quite. It also is missing the secrecy pocket that was advertised.Still 4 stars. It is comfortable to wear for me and made me much more mobile then the single shoulder bag that originally came with my unit. I use not only o2 but also either a cane or walker and the original 1 shoulder bag would either slide off or hang fu ny and make my back scream at me.This bag sits well and distributes the weight so I could go much farther then before and with less pain.It has a zipper on one side that holds a the smaller battery for a caire a d the bottle holder on other side can hold a small thing of juice and a granola type sized bar. Which means I can carry a snack and being diabetic 1 bag for all that is great.Now the fit. If you do not use the taller batteries you can just barely pull the flap over the top and secure the velcro. But you have to be careful cause it can come loose and if tipped will spill your machine on the ground.It also does not vent very well if you set it down it can get hot.The rubber vents in the front have started to tear at the seams which makes me sad. I am however going to reorder as it was worth it for months of increased freedom I wanna say 6-9 months. Other styles that are shorter then caire freestyle I am sure would fit better a d not stress the rubber seam and have it last much longer. But rubber can only stretch so much.

This fits inogen G3 portable O2 machine very nicely.It also has a side pocket to carry a backup battery. The straps are detachable which makes it easy to carry the unit across the body. This bag is very sturdy and attractive it has been a lifesaver. I would definitely recommend purchasing it.