Clean Zone produces activated oxygen to clean, sanitize and eliminate 99% of germs and bacteria from every surface of your CPAP reservoir, tube and mask in minutes. No water or chemicals needed! You'll breathe in healthy, clean air and sleep peacefully. The rechargeable unit is lightweight, compact and much less expensive than other models. Includes charging cord, 2 hose adapters, 1 zip lock sanitizing bag, and 1 storage/travel bag. Vinyl and acrylic. Approx. 4 1/2" x 2 1/2"x 2".