The bag is smaller than the AirSense11 case, but not by much. All of the items fit in the bag, I had to tuck one side of the N20 mask assembly under the AirMini. The padded separators are adjustable so there are different ways to configure the inside. I wish there was room for a small extension cord in the main compartment. I have it in the outside zipper compartment so at least I have one for outlet starved hotel rooms. You can slip it over a suitcase handle like you can the AirSense case, so it makes it easy to haul around the airport.