Density vs. Firmness
Foam is a versatile substance, You can give it any feel or structure you want. As such, it can also be a little confusing. One of the most puzzling parts of this industry is the difference between denseness and firmness. These terms are often misused and can easily confuse potential customers.
Let us clarify. Density is the amount of material stuffed into a specific amount of space. Firmness is the feel and bounce of that material. Therefore, foam types like our memory foam like material could easily be dense without being particularly firm.