O2TOTES Ultra Lightweight Backpack Fit For Inogen One G3 & OxyGo (Patented Design) (black) Lightweight at under 14 ounces, Backpack Only, Zippered bottom, fits standard and double battery; black

Just took delivery on this little O2 concentrator backpack. I am of average height (5'5") but am very, very thin (under 100 lbs). I was worried that I would have to draw the straps in so far to make the backpack fit me that I would have miles and miles of 'extra' strap hanging everywhere. I am very happy to say that there is plenty of strap length so the pack straps can lengthen to fit over bulky clothing/coats but not so much strap that I'm drowning in/tripping over excess strap length when wearing the pack over regular clothing. If you are a larger person, I'm honestly not sure this pack will work for you if need to wear it over bulky clothing. The pack appears very sturdy, and is well sewn. Fits my Inogen G3 perfectly...like a glove (it WILL NOT hold a larger machine). Has a neat little zipper flap thing on the right shoulder strap to help contain/guide your oxygen tubing. It's not terribly obvious in the photos or mentioned in the product description, but this pack DOES have a waist strap (the text on the product photos mentions it). The padding on the shoulder straps is nice and wide. The color of the pack is not a vibrant pink; up close, the fabric actually shows a variegated blend of colors in the weave that from a distance overall reads more towards a light burgundy. It's a lovely color. The pack accommodates an extended battery with ease, and a pad is included to fill the space left over if using a "regular" battery. So far, I am very pleased with this purchase, especially when you see other, supposedly "fancier" packs that are far more expensive with poor ratings. This is a great little pack!

It is sturdy, light weight and easy to put on and take off. It is worth every penny.

Its a perfect fit for Inogen 3 straps are sturdy and comfortable, it doesnt pull down on my back which doesnt cause me added back pain, Im able to have my hands free to dance. very happy with Case highly recommended

I'm impressed with the quality and appearance of this backpack. But, after you insert the machine into the backpack, you will probably want to add a spacer, such as a sock or a piece of dry sponge, to assure that the holes for the air hose and the charger plug line up properly. (You can use it without the additional spacer. But the fit will be less than ideal.)

The backpack fits my one G3 perfectly. I can use my 8hr battery with it and fits perfectly. The chest, waist straps,and tubing holder are easy to negotiate. The best of all is that I can keep the unit on my back while driving around doing errands. The machine works perfectly because there is air around it. AMAZING purchase. Thank you 02Totes

I really like this and fits well. Much barry to carry the oxygen portable on my back than my shoulder. A lot more comfortable and I stand up straighter.

I’m 5’4” and weigh 126. The padded part of the shoulder straps could be shorter. The backpack sits right at my waist and the padded strap cuts into my armpits. I can not make the backpack fit better on my back because the padded part is way to long for me. Please consider making a model that fits petite women better. It is made well and light weight.

Great item and fits perfectly