Memory foam is a type of polyurethane foam recognized for its high density and durability. It offers exceptional support and pressure relief.
Initially created by NASA in 1966 to enhance cushioning safety, memory foam is known for its ability to absorb impact and contour to the user’s shape. A unique feature is its slow “spring back” characteristic, where it gradually regains its original shape after pressure is removed. This quality makes it particularly valuable in mattresses, where it is often combined with other materials for enhanced support. It is commonly found in both traditional mattresses and bed-in-a-box mattresses.
How does it work?
What are the Benefits for Sleep?
While memory foam mattresses offer many advantages, you should weigh some potential drawbacks if you’re considering a new bed.
PROS
- Pressure and Pain Relief
- Hypoallergenic materials
- Reduced motion disturbance
Memory foam’s contouring and cushioning qualities make it an excellent option for individuals who find traditional mattresses uncomfortable or painful. This type of bed may be particularly beneficial for people dealing with conditions like joint pain, arthritis, or bedsores.
Allergy sufferers can also gain from memory foam’s dense structure, which makes it resistant to dust mites. Additionally, as long as it stays dry, the foam is generally resistant to mold and bacteria.
The viscoelastic properties of memory foam make it especially suitable for couples, particularly if one partner is a light sleeper. Because the material doesn’t immediately spring back or bounce, it minimizes motion transfer. This means you’re far less likely to feel movement if your partner tosses and turns or gets out of bed.
CONS
- Heat Retention
- Sinking or “Stuck” Sensation
- Heavier Mattress
Despite their plush feel and pressure-relieving benefits, memory foam mattresses may not be ideal for everyone.
The foam moulds to the sleeper’s body, creating a dense cushioning effect that can trap heat. While some types of memory foam are designed to address this issue better than others, these mattresses generally retain more warmth than traditional spring mattresses.
Even firmer memory foam mattresses retain a degree of viscoelasticity, which can create a sensation of being “pulled in.” This deep cushioning may make it harder for some sleepers to move or change positions, making them feel “stuck”.
Additionally, memory foam mattresses tend to be quite heavy due to their dense structure and multiple support layers. This can make them challenging to reposition, which is worth considering if you need to move the mattress to change sheets.
Types of Memory Foam mattresses
Traditional Memory Foam
Traditional memory foam mattresses are designed to contour to the body, providing excellent cushioning and spring-back qualities. Due to their dense, closed-cell structure, these mattresses tend to retain more heat.
Open-Cell Memory Foam
Open-cell memory foam features a modified internal structure with open pockets or cells, which promote better airflow and reduce heat retention. However, these mattresses are often less dense and may provide less support compared to traditional options.
Gel Visco or Gel-Infused Memory Foam
Gel-visco or gel-infused memory foam mattresses recover their shape faster. Manufacturers integrate gel beads into the foam, which help disperse heat and alleviate pressure points. As a result, these mattresses typically feel cooler on the surface.
Hybrid Memory Foam
Hybrid mattresses combine memory foam with other materials for added benefits. For instance, memory foam layers are often paired with a base layer of pocket coils or alternative foams, such as latex, offering enhanced support and durability.
Choosing the Right Memory Foam Mattress for You?
With countless variations and brands available, selecting the ideal memory foam mattress can feel overwhelming. Here are key factors to consider:
Firmness
Memory foam mattresses come in varying comfort levels, from soft to firm. Your choice should depend on your preferred sleep position:
- Soft mattresses may be ideal for side sleepers who need pressure relief.
- Medium firmness suits combination sleepers who shift positions throughout the night.
- Firm options are often better for back or stomach sleepers seeking added support.
Density
Foam density impacts both firmness and performance:
- Low-density foam is generally softer but lacks robust structural support.
- High-density foam offers better support but may retain more heat.
Thickness
Thickness differs from density and doesn’t always correlate with comfort. Thin foam can vary in firmness based on manufacturing processes. It’s crucial to ensure the mattress provides sufficient support to maintain proper spinal alignment during sleep. Testing both thinner and thicker models will help you find the right balance of comfort, support, and heat retention.
Thicker mattresses may also influence your bedding choices. For example:
- Foam beds with pillow tops or additional layers may require deep wall sheets for a proper fit.
- Consider height compatibility with your bed frame or lifestyle needs if the mattress is exceptionally tall.
If you are also considering a Spring Mattress, read more about the Spring Mattress VS Foam Mattress to help you determine the best bed for you and your family.
FAQs
Memory foam is a durable material engineered to gradually conform to the body’s shape, relieving pressure and promoting even weight distribution.
Unlike regular foam, memory foam reacts to body heat and pressure, becoming softer and contouring the body. It takes on your shape as pressure is applied and returns slowly to its original form when you move or remove pressure.
Memory foam pillows offer support and pressure relief by contouring to the shape of your head and neck. It is ideal for side sleepers.
