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25 articles with between 400 and 700 words, including:

A Deeper Look at the Memory Foam Mattress
Advantages of the Memory Foam Mattress
Advertising Your Memory Foam Mattress Biz
Benefits Of The Memory Foam Mattress
Having a Good Sleep with Memory Foam Mattress

and much more...

The memory foam mattress was initially developed in the 1970’s for use of by astronauts to help them deal with the enormous G-forces they encounter during liftoff and re-entry in the earth’s atmosphere. But this project was not successful and in the 1980’s, people discovered another means for it and it was designed for sleeping. With that you can say that the memory foam mattress you see today is not a product of NASA but rather its by-product. This product was only launched in the market in the early 1990’s. Initially, the public did not really take notice of it because it was very expensive and also because it was very difficult to manufacture. In the years that followed, companies were able to develop it at a lower production cost and many of these were initially used as hospital beds.