Sousa condom

Sousa condoms used in the past

The current sousa condoms, seen at Freakout 2006.

Over the years there have been a number of objects used to cover the bells of the sousaphones in the band. Much like billboards, the sousa condoms make use of an otherwise vacant space, and can prevent objects from being thrown into the sousaphone. They are akin to the trombone slide cover.