Inogen One G4 Portable Oxygen Concentrator Size:Double Battery the Small cushion/clip fits only

the Small cushion/clip fits only the Small mask

it allows for a more relaxed headgear fit while maintaining consistent therapy delivery

This mask has a quick release elbow

and other residues

is designed to keep you healthy and comfortable by automatically selecting the lowest pressure required for your treatment

Inogen One G4 Portable Oxygen Concentrator Size:Double Battery the Small cushion/clip fits onlyThe Inogen One G4 portable oxygen concentrator is designed for oxygen users who want a small, quiet, and lightweight portable oxygen concentrator. The Inogen One G4's compact design and battery pack, weighing only 3. 3 pounds*, enable you to undertake activities outside the home like as doing errands, visiting relatives, or taking a vacation. The Inogen One G4 satisfies FAA travel criteria. Comes with a 7ft cannula. When not in use, the Inogen One G4