This bag holds any Respironics System One model CPAP along with the integrated heated humidifier hose and mask. The bag has a shoulder strap, and storage compartments for extra filters and documentation to be stored. It is padded on all sides to cushion the equipment. The zippered flap inside has a pouch which can be used to store the hose or other like equipment. This is a travel Bag only. The machine humidifier, hoses, masks, and other accessories are all sold separately.