Density is the most commonly talked about attribute of a memory foam mattress. In general, higher quality beds are made from higher density foam and shoppers look to density as a way of assessing quality in a mattress. High density memory foam beds are more expensive because they have more foam per bed, but they offer better support and more durability.
According to the definition from Wikipedia, Memory foam is made from polyurethane with additional chemicals that add to its viscosity level, thereby increasing its density. It has been gaining popularity in recent years seeing the declining manufacturing costs.
Although some manufacturers claim that the memory foam is good for everyone, it is not entirely true. First of all, some people just never have their body fit to the memory foam mattress. Secondly, in some cases, the foam used may not be genuine in order to sell it at a lower price.More...
Memory Mattress
memory mattress