Product reviews for Tough Luxury-Firm Foam

I am using this under my mattress to prevent coils from bulging through slats. It seems to be working well for this. I bought it because it has a high ild and was described as being very durable.  I can't attest to it's durability. It is very firm, though.  When I purchased this I overlooked the part of the description that mentioned that the sheet is actually larger than the listed dimensions. Length and width needed cutting to fit my split king foundation.  I am also pleased that this foam helps keep fitted sheets from slipping off the mattress.

I am 375# and put this on my bench seat.  Love it.