What Is Memory Foam Made Of?

Ever experienced that sweet surrender to a memory foam mattress after a tiring day and wondered, "What makes this so comfortable?"

If so, you're not the only one. Memory foam mattresses have gained immense popularity in recent years thanks to their unique ability to contour and adapt to our body's shape, offering unparalleled support and pressure relief.

But what is memory foam made of?

This article will explore the components that make up memory foam and how it contributes to its exceptional characteristics.

So, let's begin!

Understanding Memory Foam

Memory foam (or viscoelastic foam) is a unique polyurethane developed by NASA that is sensitive to pressure and temperature. It was initially designed for aeroplane seats to provide added cushion and support to pilots during long flights.

However, it wasn't until the 1990s, when this material was introduced into the mattress industry, that its true potential was realized. Today, memory foam is used in various products such as mattresses, pillows, seat cushions, and even shoe inserts.

Its ability to mould to the body under heat and weight provides excellent support and comfort, making these mattresses a popular choice for those seeking relief from back pain or pressure points.

The Core Component of Memory Foam


Most memory foam mattresses contain synthetic polyurethane foam, i.e., the core component of memory foam. This material is created by combining polyol (a type of alcohol) and diisocyanate (a chemical compound) to produce a flexible and resilient foam. The ratio at which these two components are mixed can vary, resulting in different firmness levels in the final product.

In addition to polyurethane, many manufacturers also add various chemicals to improve the performance and feel of the mattress. These additives may include flame retardants, cooling agents, gels, or fragrances. However, the core component of polyurethane remains the same.

The Making of Memory Foam

Now, let's briefly explore how a memory foam mattress is crafted. The process starts with polyurethane, a petroleum byproduct, and other chemicals to form a liquid mixture.

Gases are then introduced to create an open-cell structure, making the foam heat-sensitive and allowing it to contour to your body for effective pressure relief.

Some manufacturers, like Crafted Beds, even use gel-infused foam for temperature regulation. This gel is evenly distributed throughout the foam to absorb and dissipate heat, providing a cooler sleeping surface.

The liquid mixture is then poured into a mould and cured through vulcanization. Once cured, the foam is cut into desired shapes and sizes using specialised machines.

But, it's crucial to remember that not all memory foam is created equal; some might prefer a soft memory foam mattress, while others may favour a firm memory foam mattress. So, when purchasing the best mattress for you, it's essential to consider the materials used and their density.

Memory Foam and Petrochemicals

memory foams

As mentioned earlier, memory foam is primarily composed of synthetic polyurethane foam, which is derived from petrochemicals. Petrochemicals are chemicals extracted from petroleum or natural gas.

While the use of petrochemicals in memory foam has raised concerns about its environmental impact, it's essential to note that these materials also play a vital role in various industries and products we use every day.

However, some mattress manufacturers like Crafted Beds are now opting for more eco-friendly alternatives such as plant-based memory foam made from renewable resources like soybean oil. These mattresses offer similar benefits to traditional memory foam but with a reduced carbon footprint. So, by opting for these eco-friendly options, we can still enjoy the comfort of memory foam without compromising on the environment.

Varieties of Memory Foam

So far, we have discussed the basics of memory foam and its unique properties. However, not all memory mattresses are created equal. Various varieties of mem foam are available today, each with its distinct characteristics.

Let's take a look at some types of memory foam:

Traditional memory foam, often called viscoelastic or temper foam, it is a type of foam developed by NASA that moulds to your body shape and offers excellent relief and support. However, its tendency to retain heat could negatively impact sleep quality.

Gel-infused memory foam shares properties with traditional foam but incorporates gel particles or liquid gel into the foam. This design aids in evenly distributing body weight and better temperature regulation by absorbing and dispersing body heat, offering a cooler sleeping surface.

Plant-based memory foam is a greener alternative by substituting some petroleum products used in traditional and gel memory foam with plant-derived oils. Unlike memory foam, this foam type is more breathable, has a faster response time, is eco-friendly, and has fewer off-gassing issues.

Furthermore, The best mattress depends on several factors, including personal comfort, sleeping position, and temperature preference. Your preferences for a softer or firmer feel might lead you to opt for a high-density foam mattress or a mattress with a reflex memory foam layer.

Reason Why You Should Choose Memory Foam

Here are some reasons why many people choose to purchase memory mattresses:

  1. Superior Comfort: They mould your body for personalised comfort.

  2. Pressure Point Relief: The heat-responsive nature of these foams provides pressure point relief.

  3. Motion Isolation: Their shape retention prevents disturbances from bed movements.

  4. Hypoallergenic: The dense structure of memory foam reduces allergen build-up.

  5. Durability: High-density foam in memory mattresses ensures long-lasting shape and comfort.

  6. Customisation: Many companies like Crafted Beds offer customisable with their memory foam beds. So, whether you prefer a firmer mattress, a softer memory foam mattress feel, or something in between, there is a memory foam mattress for you.

Cons of Memory Foam

Despite its numerous benefits, these mattresses also have some downsides that should be considered before purchasing.

Below are the cons of memory foam mattresses:

  • Heat Retention: They retain body heat, leading to a potentially warm sleeping environment.

  • Off-Gassing: The mattress can release a strong chemical smell when unpacked due to volatile organic compounds (VOCs).

  • Slow Response Time: They slowly return to their original shape after removing pressure, which can lead to a 'sinking' feeling.

  • Weight: These mattresses are typically heavier than others, making them more difficult to move.

  • Price: High-quality memory mattresses can be more expensive than different mattresses.

Memory Foam Vs. Other Materials

After reading about the benefits and drawbacks of memory foam mattresses, you might wonder how they compare to other mattresses. Well, let's see:

  • Memory Foam vs Innerspring Mattress: These provide better pressure relief and weight distribution than innerspring mattresses.

  • Memory Foam vs Low-Resistance Polyurethane Foam: They offer superior support, comfort, and durability compared to low-resistance polyurethane.

  • Memory Foam vs Natural Latex: They mould to the body for personalised comfort, a feature less prominent in natural latex.

  • Memory Foam and Volatile Organic Compounds (VOCs): Reputable mattress companies ensure their products are certified safe and free from harmful levels of VOCs.

  • Memory Foam vs Reflex Foam: They are softer and more responsive, offering better comfort and pressure relief than reflex foam.

Final Words

Now that you've read everything now, we hope this guide has helped you decide whether to purchase a memory foam mattress from Crafted Beds.

Don't let another night of restless slumber pass you by. Experience the luxurious comfort and unparalleled support of Crafted Beds' memory foam mattresses. With our innovative designs and quality materials, we're committed to helping you achieve the deep, restful sleep you deserve.

So why wait any longer?

Click here to explore our wide range of memory mattresses, and make your pu

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