The Freemie Original Collection Cups for Medela pumps are retired and no longer available. This original open-system cup system relied on the compatible pump's barrier or other in-line barrier to protect the pump.
The two cup systems look like this:
While the cup parts may look alike, they do have differences. Parts for cup sets are not cross-compatible and cannot be mixed and matched.
Freemie products are now closed-system only and have an internal barrier that protects the tubing and pump motor from milk backing up.