You mean the side felts? From what I remember, it's just a bolt and a plastic push pin on each side. The rear section is held in place by the trunk rear trim panel, there's a bolt on each side just below the trunk lid hinges, and a push pin holding the front part. I'd have to go find my originals but there may be another plastic push pin now that I think of it.
If you have/had the Shaker 1000 system, the passenger side will be different but the shaker system holds part of it in place.