Most people will start asking this question when buying a mattress. In the simplest form, or common, mattresses memory foam sold are produced by viscoelastic foam and include a design consisting of three layers. The first layer on the "Comfort Layer" is made of a special material that molds with body shape when exposed to body temperature. When exposed to the body, the body under pressure, we will help the body and the bones we comfortable, they correspond to any shape of our bodies. When not under pressure from the body, they will return to its original state when not in use. The second layer is called the "Support Layer". It is designed to maintain rugged than the elasticity of the first layer and keep the size of the original shape of the mattress. Finally as it provides support for the softer layer of comfort and thinner. The third layer is the final layer "Base Layer" of the design.
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