What Does The Density Of Memory Foam Mattress Mean?

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How much do you know about a mattress density? Primarily, the density of a memory foam mattress is measured in cubic centimeters. Thus, if your desired mattress comes with a density of 65kg, this translates to a weight of 65kg cubic meter. If we compare two memory foam mattress 45 kg and 65 kg; the 45 kg mattress is low and doesn’t offer great support in comparison with 65 kg. Essentially, the one weighing 65 kg is considered to offer great support and comfort.

Density Of Memory Foam

Generally, a memory foam mattress that has a lower density won’t last for long since it will easily lose its shape, elasticity, and strength. Ideally, a great quality mattress is durable, and worth investment. A High-density memory foam mattress, contours to your body, shape offering maximum support and comfort. They also relieve your body pains due to their therapeutic nature. When you wake up, the foam mattress returns to its normal shape. You have to know that the density of a memory foam mattress determines most of its characteristics. You will probably know all the aspects of a particular mattress by just looking at its density; some of the factors that you can know include durability, motion, contouring factors, and firmness.

There are 3 types of memory foam mattress densities density layers

  • Low density

  • Medium density

  • High density 

Now, let’s compare various characteristics of these three mattress densities

1. Satisfaction

All mattresses, low, medium, or high densities have almost the same level of satisfaction. If you use a grading system, they all have about 80% degree of satisfaction. However, mattresses of various densities always have slightly different weakness, strengths and characteristics.

2. Prices

Although various foam mattress models have distinct prices, the price inclines more on the density. If all factors are constant, a higher density means a higher price. Higher-density mattresses have densities of about 5 lbs/ft, medium density mattress has densities of approximately 4 lbs/ft while low-density mattress has about 2.5 – 3.0 lbs/ft.

3. Back Pain Relief

Essentially, all mattress densities or topper offer great back, hip, and shoulder pain relief. But higher-density mattress offers better pain relief in comparison low and medium densities. The argument behind this statement is that high-density mattress contours to the body shape of an individual perfectly than the others.

4. Durabilitymemory foam lifespan

Mattresses of various densities have different levels of durability. Generally, high-density mattresses continue offering comfort and support for about 8-9 years. Contrarily, a medium and low-density mattress can last for about 4-8 years. Nevertheless, the durability of a particular model can vary greatly.

5. Initial Odor

Generally, all memory foam mattresses come with some initial odor. The smell might be slight, but it will definitely be there. According to most people’s views, the higher the density of a foam mattress, the stronger and / longer or it will process the initial odor or gas. Nevertheless, people usually avoid the odor by airing out the mattress. Others usually leave it laid on the bed some some time before sleeping on it.

6. Motion Isolation

A mattress that has great motion isolation helps to absorb the movements of a sleeping partner allowing two people to sleep without disturbing each other. In other words, mattresses that have excellent motion absorption are great for couples. Even though all mattress densities absorb motions perfectly, a high-density memory foam mattress seems to absorb the motion completely.

7. Sleeping Temperatures

Most people complain of their memory foam mattresses trapping much heat. When this happens, they tend to cause night sweating. Evidently, the higher the density, the more heat a mattress will trap. About 5% of people who sleep on low-density mattress report night sweats, 8% in the case of medium density and 12% in the case of high-density memory foam mattress. Thus, you may choose a low density mattress if you want to avoid night sweats.

8. Body Conforming
Body Conforming

A higher-density mattress is more conforming since it’s more sensitive to temperature; the mattress is firmer in lower temperatures and soft at high temperatures. Nevertheless, some people feel uncomfortable when sleeping on a high density memory foam mattress since it feels like “mud” or “quicksand”. On the contrary, low and medium density mattresses are less sensitive to temperature, and they don’t sink much.

Final thought

Evidently, low, medium and high density memory foam mattresses have various distinct aspects. They all offer different quality sleep. Even though most people think that a high-density memory foam mattress is more comfortable, it has its own shortcomings. Thus, before choosing a mattress ensure it will suit your specific needs.


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