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Memory foam has been about since it was developed in 1966, but it has only been generally accessible for about twenty years, although twenty years ago hardly anyone could afford it.

One of the early uses of memory foam was for mattresses for the bed-ridden. This is because memory foam mattresses help minimize pressure on the skin touching the bed, which reduces the chances of bed sores and gangrene.

In those early days such mattresses were unbelievably expensive so just hospitals and the wealthy could afford them. However, the price of memory foam mattresses has fallen sharply over recent years and now they can even be bought on Amazon and.

Initially this extraordinary foam was invented by one of NASA’s spin-off research firms, so it is a product of the space program. At the time, scientists were attempting to find a safer material for use in cushions and pillows for the aeronautical industry.

They came across this foam, but NASA allowed the right to make it, the patent, to slip into the public domain.

A Swedish firm took up the challenge and made orthopaedic mattresses with it because of its capability of moulding itself to a body’s individual shape due to that body’s heat and weight, thus supporting the body at more points than a traditional mattress. It is this additional support that reduces pressure on the skin and so reduces the likelihood of bed sores.

Another property of memory foam is its composition. Normal foam is manufactured up of lots of bubbles per cubic inch which are in effect sealed off pockets of air. You body heat warms this air up and so keeps you warm.

This can be a good or a bad thing depending on the background temperature, but normal foam is always warm.

On the other hand, the cells or bubbles in memory foam are not sealed off entirely so air can course between them. That means that warm air can escape and be replaced by cool air.

This allows you much more control over the temperature of the mattress by regulating the temperature of the room.

There are two types of memory foam high density and low density. One reacts to heat and the other to pressure (or in this situation, body weight). Most memory foam mattresses are manufactured up of a combination of these two kinds of foam so that the top layer reacts to the heat of your body and shapes itself around you, whereas lower layers react to your weight in the same way, depending on how weighty you are.

The lower layers will permit the passage of cool air and this will be transferred to the upper layer, keeping your body cool. One point to make on this topic is that because memory foam mattresses react to heat, if you live in a hot country, the foam will become fairly flaccid because of the background heat. Therefore, if you live in a hot country, the mattress will have to be that much thicker to permit more air to circulate.

Owen Jones, the writer of this piece, writes on a variety of subjects, but is now involved with the Visco Elastic Mattress. If you would like to know more, please visit our website at Egg Crate Mattress Pad For Sale.

Memory foam may seem like a brand new product to most people, but in fact it has been obtainable commercially for more than forty years. From the early days until fairly recently it was mainly obtainable in the form of mattresses, pillows, cushions and the sort of padding that you get on doctors’ couches and wheel chairs. It was very expensive, so it was not thought to be commercially viable for the mass market.

That has all altered over recent years as production costs tumbled. Nowadays, almost anyone can afford a mattress, mattress topper or cushion made out of memory foam.

Memory foam mattresses and mattress toppers help many people to settle comfortably and sleep well because memory foam moulds itself to the contours of the body, thus supporting the body on a greater surface area than a regular mattress or cushion would.

A true memory foam mattress is designed to give maximum comfort in the manner described above and is the right thickness for that purpose, but a mattress topper is like a conversion kit, so can it really convert a normal mattress into a memory foam mattress? This is a tricky question, because the answer, as it so often is, is that it depends.

A real memory foam mattress is designed to give maximum comfort in the way described above and is the correct thickness for that purpose, but a mattress topper is like a conversion kit, so can it really convert a standard mattress into a memory foam mattress? This is a difficult question, because the answer, as it so often is, is that it depends.

It depends on two things: the type of mattress that you are setting the topper on and the quality of that topper.

Firstly, in order to be effective the topper has to be on a fairly stiff surface or it will just sink into the present mattress and most of the advantages it can supply will be lost or absorbed into the mattress beneath.

Secondly, the topper has to be deep enough so that you can sink into it without hitting the bottom so to speak. If it is not thick enough, it would be like trying to float in a bath tub. If you need to, you could lay a sheet of plywood on your mattress first to stiffen it up.

The foam also has differing density. The low density foams, 2.5-3.5 lb foam, reacts more to body warmth and so is normally better for light people, whereas the high density foam, 5 lbs and above react to heat and pressure (or weight) so are more effectual for heavier people.

The foam also has differing density. The low density foams, 2.5-3.5 lb foam, reacts more to body warmth and so is usually better for lightweight people, whereas the high density foam, 5 lbs and above react to heat and pressure (or weight) so are more effective for heavier people.

One last thing, if you use an existing mattress topper manufactured from something else, you will not be able to place it on top of your memory foam mattress topper.

Owen Jones, the author of this article, writes on a number of subjects, but is now involved with the Visco Elastic Mattress. If you would like to know more, please visit our website at Egg Crate Mattress Pad For Sale.