We bought these items one for a gift and one for us. My husband is on oxygen and his tank and air hose are bully and sometimes awkward with the hose hanging down getting tangled on things. The design of this backpack makes it perfect for his tank to remain upright and the air hose comes over his shoulder. Both hands are free and he has more ability to move freely when we are out and about. A big plus is that there's still room for other items he/we might need! Love it!!