O2TOTES Mesh Backpack for Oxygen Concentrator Fits: Inogen One G3, Inogen One G5, Caire Freestyle Comfort, Respironics SimplyGo Mini (Fits: Respironics SimplyGo Mini & Caire Freestyle)

Perfect for holding the oxygen concentrator with plenty of ventilation and storage space.

Love the pack but the bottom has ripped out from carrying the oxygen batteries

Finally found a bad that fits my Freestyle perfectly

While the Rythem P2 physically fits inside bag the openings while numerous are not located correctly. Adding a couple inches of firm foam under P2 raises it so opening for cannula will sort of line up. Size wise this bag is too oversized for P2 and too undersized for and adult to wear comfortably. The padded shoulder strap pair needs to be larger and the waist belt needs to be sewn to lower part of bag. After a couple weeks of wearing for 2 or 3 hours per day one of the seams is fraying. The worst part is with holes in wrong locations you have to remove P2 to charge it.

I simply love this backpack! It holds my oxygen concentrator perfectly and allows me to be able to walk much better! It also has a storage compartment on the bottom where I can store the cord for charging. Looks very nice and construction is solid. Great purchase.