You don't need to call in Watson to help you figure out the mystery of the best Halloween costume this year. This Sherlock Adult Costume features a heavy duty jacket and the detective's signature hat. The brown cloak is available in one standard size that is designed to fit most adults up to a size large comfortably. If you really want to convince the ladies you know how to solve even the toughest mysteries, pair this Sherlock costume with a Jumbo Magnifying Glass or Detective Pipe both sold separately on our website. It's simply a logical costume. You could even say it's an elementary choice! This sleuth is definitely the solution to winning the best costume prize this Halloween so you'd be deranged to suit up in anything but our Sherlock Adult Costume.