The people of 1955 just dont understand fashion like the people of 1985. Biff and his goons seem to think Marty McFlys vest is some kind of life jacket even though its the epitome of cool in 1985. Then again its hard to expect a guy who cant even put together the simplest of metaphors to understand fashion from the future.

Fun Costumes Back to the Future Marty McFly Costume Size: M
$49.48