The density of the pillow is one of the major components of a pillow; while selecting a memory foam pillow for your Self. So for the next time, if you go for buying a pillow don’t miss this major component at the time of making a purchase.
The density of the memory foam tells you about the weight more correctly than the firmness of the foam. Low-density memory foam can also be hard or firm. It is very thin but stiff and firm also. If you want to calculate the density of the single piece of foam then you need to use the width, height, weight, and the length of the foam.