Head to the party wearing the Inflatable Adult Scooby Doo Costume and you'll be cruising around looking for villains in your Mystery Machine. Don't be surprised when all the guests start asking to join you on a mystery hunt when they catch you sporting this fun Scooby Doo attire. Featuring a brown inflatable Scooby Doo costume with a blue dog collar and an attached headpiece, you're going to love donning this inflatable Great Dane look this year.