Memory Foam is Unique and Has Unique Features and Benefits. Memory Foam originally came from NASA and was being used in the seats of the Space Shuttle to help relieve G-forces on take off. Therefore, you get the same pressure relief and body contour and support that you you get with a Memory Foam Mattress. However, there are many different types of Memory Foam, such as, density that will determine the actual pressure relief and body contour and support you get.