Measuring 1.5" across in diameter, this little button asks that you vote for Hulk as the next class president.  I mean, you really, really should, unless you enjoy a smoldering wreck of a classroom.  Basically, no one runs against Hulk and he wins the election every year.  And no, he won't ever graduate so we're pretty much stuck with him.  So, the button doesn't really serve a purpose.  The Hulk simply appreciates the ritual before the assured ego boost.