Tempur-Pedic has been the Cadillac or Mercedes of memory foam mattresses in the United States since 1992. Tempur – the brand of memory foam designed by the Swedish foam firm that took the technology developed by NASA in the 1970s to cushion the acceleration couches for astronauts is a much more dense visco-elastic foam than any other manufacturer makes.
Compounding the issues of being too soft and breaking down earlier, many cheaper memory foam mattresses are manufactured with toxic chemicals like formaldehyde and other chemical fixers. These strong chemicals can cause allergic reactions in people prone to allergies and give off strong smells that can be similar to a vinegar odor. The majority of cheap memory foam mattresses are produced in factories in China where quality control is not as strict as at American factories. Even if your cheap mattress is labeled with a certain density you can bet that it will be less than advertised.
Another factor is that cheap memory foam mattresses are manufactured in an environment that allows the waste gases like chlorofluorocarbons (CFCs) to escape into the atmosphere to damage the ozone layer. All of the memory foam mattresses made in the United States are monitored by the EPA to prevent the waste gases from being vented to the atmosphere.
There is a place that offers an American made memory foam mattress that is truly a cheap memory foam mattress. For as little as three hundred sixty nine dollars ($369) you can get a twin size nine inch memory foam mattress with a three inch high rebound top with a six inch high density base that does not require a box spring base. These mattresses are poured in North Carolina from a compound made by BASF; the same company that has been providing cushioned supports for NASA since 1983. This is less than the comparable Tempur-Pedic three inch mattress topper ($532).