This is due to the natural properties of the material.
Top firm foam mattress.
The rest of the mattress consists of a 2 inch convoluted foam layer for airflow and cooling a 4 5 inch base foam that reduces motion transfer.
And another 1 inch copper gel infused foam layer.
The 2 inch top layer is gel infused memory foam.
Some mattresses also come in medium on the firmness scale offering support as well as softness for pressure points.
This medium firm mattress conforms to your body s natural curves for proper spine alignment and sleep innovations says it s especially.
On the other hand innerspring and latex are materials are generally more responsive and they can make it easier for the mattress to be a firm.
Before you buy a firm mattress it helps to know how mattresses are rated on a scale of firmness.
Firm mattress types include innersprings latex foam and hybrids.
What to know about firmness ratings.