Pressure relief and support

[roy1]

1. Do they go together?
2. If a mattress becomes soft does it lose both the support and the pressure relief?

 

[Phoenix]

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