This AirLift oxygen cylinder carrier fits around your waist just like a fanny pack. It also can convert to a shoulder carrier with a detachable strap. There are 2 carrier sizes to choose from: one fitting M6, C/M9 and B cylinder, and the other fitting M4/A, M6A/ML6, and M7 size cylinders. The waist belt can be adjusted up to 56 inches, and is padded so it won’t become uncomfortable as it sits on your waist. Also, for a better fit this fanny pack oxygen cylinder carrier features an adjustable side strap to support your lower back. For better ease of use, this fanny pack features multiple cannula access points. And to help you carry your oxygen supplies, this AirLift fanny pack has an interior pocket for your cannulas, tubing connectors, or even some extra tubing. This oxygen carrier is made of non-flammable, non-abrasive material, and it has been designed with superior ventilation for unsurpassed safety. Available only in navy blue, this AirLift oxygen carrier is machine washable; hang dry.