The art & science of asking questions is the the source of all knowledge" - Thomas Berger

Do bad back sufferers have to sleep on the firmest mattress?

This is a subjective question.  It greatly depends on the how the body structure response to the firmest mattress.  In many cases, a medium-firm type of mattress may be the solution.  Too firm a mattress, might not be able to relieve the pressure points on your body.  And too soft a mattress, might not be able to provide the support that the bad back sufferers need.  We suggest you speak to our bedding consultants to find out more.