I have a Boppy slipcover question

[downwarddog]

I just got an activity Boppy (don't remember what it's officially called -- 5 in 1?) on Ebay. I had thought that all Boppys were slipcovered, but obviously I was wrong. I'd like to get a softer Boppy slipcover for nursing -- will it fit over this Boppy or are the slipcovered ones a little smaller?

Thanks,
Lenore
Due 9/20 in NH