The Fanny Pack For Oxygen Cylinder, models 46N and 48N,is an oxygen cylinder carrying case designed for use by individuals with respiratory disabilities. Made of non-flammable polyester, this carrying case has an interior handgrip accessory pocket, adjustable waist belt and adjustable compression straps for lower back support. The carrying case can be converted to a shoulder carrier using the detachable, non-skid shoulder straps. The Fanny Pack fits cylinder sizes M6, C/M9 or B (model 46N) and M4A, M6A/ML6 or M7 (model 48N). The case is machine washable. DIMENSIONS: Belt adjusts up to 56 inches; straps are one-inch wide. WEIGHT: 1 pound. COLOR: Navy. WARRANTY: One year warranty.