Inogen G4 Ultra Lightweight backpack|o2totes/Backpack Only Does not come with O2/Only for the Inogen One G4
- Lightweight design weighing only 9 ounces/For the Backpack Only, Does Not come with O2, must have your own Inogen.
- Keeps you hands free while wearing your Inogen one G4 (not included).
- Mesh panels surround your unit (not included).
- Adjustable backpack straps, removable chest strap for even more comfort.
- This will not work for anything but the Inogen One G4. All Inogen units are called Inogen One, you need to find which one you have, G3, G4, G5.