Oxygen Tank Backpack Portable Oxygen Cylinder Bag Carrying Travel Storage Fits M15(D)

The oxygen tank backpack fits size M15(D). The oxygen cylinder backpack has 6 holes placement for the tubing to come out conveniently. The hook and loop fasteners, hard plastic base inside and 4 rubber feet on the bottom of the bag hold the oxygen cylinder in place. 2 zippered pouches on the front of the backpack are enough for the small equipment. Nice padding on the back of the travel backpack protects the oxygen tank, and the chest straps are very easy to adjust to make it tighter and looser.