Ceaser's new bed arrived tightly wrapped and as flat as a pancake.  I began searching for instructions on how to inflate it with either a bicycle tire pump or perhaps a vacuum cleaner, but no instructions were found.  I placed the bed on the floor and Ceaser immediately loved it, especially rolling himself on the super soft fleece-like top.  How it happened I can not say, but by the following morning the bed had magically inflated itself to match the thickness of the bed in the picture.  Buyers need to know that this "magic" will happen to their purchase, too, and not to allow themselves to immediately return such a really great pet bed.  Just give the magic time to happen!