1.  Do they go together?

2.  If a mattress becomes soft does it lose both the support and the pressure relief?

 

 

 

There are a couple of recent threads that talk fairly extensively about this. So rather than answer directly ... I'll just post the links :)

http://www.whatsthebest-mattress.com/forum/simmons-backguard/15884-0-1.html

http://www.whatsthebest-mattress.com/forum/my-mattress-arrived/15666-0-1.html

Make sure you click on the "all" link if you want to read the whole thread.

Phoenix