I recently started using a Philips Dreamstation AutoCPAP machine. The travel case that comes with the machine is rather large and a slight nuisance when dealing with it as carry-on luggage. This slimmer, fitted, hard-shell case is notably less bulky. Note that the included 65 watt power supply won't support the humidifier module. Before I bought this travel case, I tried using my Dreamstation without the humidifier to be sure I could tolerate it. I didn't wake up after testing it for several nights feeling as if I had been lost in a desert so I decided to purchase it and I'm glad I did. Its fitted interior compartments perfectly hold the CPAP unit, power supply, hoses and mask. Note that if you have a heated hose, it will properly connect to the back of the CPAP blower unit although there's no power to it. I'd suggest carrying an unheated 15 or 12 gauge hose when traveling without the humidifier.