Adult Scooby Doo Inflatable Costume Includes Inflatable Costume with Battery Operated Fan. It's the perfect disguise for spooky hijinks—and huffing and puffing! Your Scooby-Doo dreams have come true, with an inflatable costume that won't deflate if you get a little too enthusiastic. Flaunt your inner Scooby-Do with your own inflatable doppelgänger! Huff and puff your way to spooky hijinks galore, all without having to worry about your costume going flat mid-adventure.