Stage hat?
Collapsible top hat maybe in red or blue? (by Mr. Magic)
I'm looking for the one with the, using your description, 'not so great' trailer and as far as I can tell - neither has any trailer at all.
So, let's go w/the Mr. Magic Red or Blue.
Careful here, I've seen one and, although the ad mentions 'standard' size, the brim seemed smaller/thinner and the hat didn't look right (like a normal top hat)
Plus, I don't think that these two have the pocket inside.