High density foam is a type of polyurethane foam that is made up of a numerous amount of open cells or bubbles that are closely packed together. Due to the high density, air is able to pass through the holes in the bubbles easily. Allowing the air to pass through results in making the padding in your mattresses or cushions comfortable.
High density foam also has a tendency to hold its shape more effectively than other foams. This means that when an object is removed from the foam, the foam resumes its original shape. The easiest way to understand this is by picturing a mattress that is made with high density foam.
When you lie down on the mattress, the foam used allows the mattress to conform to your individual shape, and at the same time provides support for the spine, by keeping it in a neutral position and eliminates any stress on your back as well as neck.
When you get off of the mattress, the foam has the ability to regain its original form time and time again. Mattresses will hold their shape for many years which provide a longer period of use than mattresses which use other types of materials.
Other uses for high density foam include cushions and pillows. Chairs and sofas have foam padding in order to make them comfortable for sitting and can last many years before showing signs of languish. Additional uses for this type of foam includes wall padding for soundproofing rooms such as recording studios.
High density foam comes at a competitive cost, but can meet or exceed the life of products using other materials. Using high density foam is cost-effective and practical for manufacturers and consumers.