Abstract: A vented colostomy pouch includes a water proof bag having a waste aperture and a vent aperture, with an annular member being secured to the vent aperture and a plug type closure being removably connectable to the annular member to seal the vent opening. The plug and annular member are integrally formed as a unitary member from a plastic material with a flexible attachment interconnecting the annular member and plug. The attachment is deflectable to permit the plug to be inserted and removed from the annular member. The plug has cylindrical side walls that resiliently fit into mating sidewalls in the annular member, with sidewall friction being sufficient to prevent dislodgment without manually moving the plug. The plug is at least slightly longer than the annular member so that the plug clears the opening in the annular member when fully inserted.