Convertible closure for a container

Convertible closure for a container includes an outer closure member having a first child-resistant portion on an inner surface, a first inner closure member having an inner surface arranged to engage with a neck of the container and a second child-resistant portion arranged to selectively engage with the first child-resistant portion on the outer closure member, and a second inner closure member arranged to engage with both the outer closure member and the first inner closure member. The selective engagement of the first and second child-resistant portion is designed so that when engaged, the closure has a non-child resistant configuration (only grasping and rotation of the outer closure member is sufficient to twist the closure out of engagement with the container) and when not engaged therewith, the closure has a child-resistant configuration (grasping, rotation and downward pressure is required to remove the closure from engagement with the container).