Memory foam was originally introduced by a team of NASA scientists and since then it has been used commercially for manufacturing of mattress toppers, pads as well as the whole of mattresses. Memory foam was discovered in the 1970s but its real use started happening only in the 1990s

Initially the memory foam was considered to be used only for wheel chair cushions as it had the ability to spread the pressure over a greater surface area. Later on other qualities of the memory foam were discovered and that includes the temperature sensitivity.

That said there are other options for mattresses and these options are wool, latex and cotton. Latex has been used in most conventional style of mattress. The popularity of the memory foam was not there initially because of the fact that it was very expensive. With a lot of manufacturing companies getting their act together now the cost has come down for the memory foam mattress. They use a technique called vacuum injection to inject liquid foam into the pre-made cast.

The most common use for the memory foam has been the toppers. The reason the entire mattress is not made with the memory foam is that it is not a very good material in terms of its hardness. The best way is to use a regular mattress as the base and then use a 2 inch or a 3 inch mattress as the topper. That way you will get two benefits. The first benefit is that you will have the hard material underneath and the mattress will not sag and secondly you will be paying only for the topper.

Then the next major thing is the density of the mattress. Use the mattress whose density is about 4 lb. This is the ideal density for the memory foam mattress. Anything above that is not good.

The difference of this mattress with other mattress lies in the fact that it has memory cells which deform easily and spread air pressure to other cells. This spreads the pressure and reduces the pressure points.

So check before buying as features may vary for the mattress and that in turn can affect your sleep

So while buying always check and think about buying the best mattresses. Go to the nearest shop and always check the mattress by yourself. This will help you in making your decision with good information and a live trial.
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