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Memory foam is a viscoelastic material that adjusts and conforms to the contours of the shape pressed against it. Visco (thick, resistance to change) elastic (returning to shape after distortion).
The difference between memory foam and regular foam is the character of response. Regular foam will return to shape immediately and can be likened to the inserts in a couch cushion. In contrast, memory foam has a much higher capacity to adjust to pressure and contours of the body.
You can benefit from memory foam if you are uncomfortable in a spring mattress, toss and turn at night, have back, shoulder, or neck pain, or if you need additional pressure relief and comfort to help you sleep.
The feel of memory foam is determined by three things that include Density, Firmness, and layer thickness.
Memory foam was originally developed for NASA by a company called EAR Specialty Composites. The resulting CONFOR Foam is a slow recovery foam that's used to protect components from damage by dampening impacts. NASA saw the advantages of supporting and protecting their astronauts during launch and re-entry.
Following that realization, the use of memory foam in the seating and instrument protection spread to nearly all aircraft, especially in military aircraft such as jets and helicopters where pilots are subjected to high g-forces.
Later, once production resulted in pricing that made it affordable, engineers made some modifications to the foam composition and translated it for use in the bedding industry.
Density is a measure of weight (pounds per cubic foot). Many densities are available that usually range from 3lb to 7lb. The ideal density and industry standard is between 4lb to 5.3lb which is what Tempurpedic and Amerisleep use.
The difference between lower density foam and higher density foam is the memory characteristics. Lower densities will have less of a "memory" to the foam when compared to higher density foam.
Typically, denser foams greater than 5.3lb will cause the user to feel more "stuck" in the mattress when compared to the alternative - mattress that uses foam between 4lb and 5.3lb.
Since the firmness of memory foam fluctuates depending on temperature, the best way to measure firmness is based on the thickness of the support and thickness of a memory foam layer on top.
You're probably asking yourself, "So what firmness is right for me?"
The best way to determine the right firmness is to start by deciding how your current mattress either satisfies or causes discomfort. From there, check your sleeping position. Consider your body's shape and match it with the correct firmness to give you proper spinal alignment.
Of course, you may find that your taste is different. That's okay! From plush to firm, we've selected the ideal range of choices to satisfy any comfort need.
Consider your body's shape and match it with the proper firmness to give you proper and natural spinal alignment.
In addition to the density, the feel of a mattress, despite many advertisements and marketing schemes, is based on the ratio and firmness of memory foam and supporting layers.
Based on consumer reviews and ratings, we've found that the ideal mattress will have between 2" and 7" of memory foam on top of the support layer. Typically, with a thicker layer of memory foam, you'll experience a softer feel. With a thinner layer, you'll be closer to the support layer resulting in a firmer feel.
Indentation Force Deflection (IFD) is the amount of force, in pounds, that is needed to indent a round indenter foot into a foam sample a certain percent of the total thickness. Essentially, the machine that measures the IFD is measuring the perceived firmness of the sample. As the "foot" presses down into the foam, it measures the resistance and how much force is required to press the sample downward. Higher ratings (such as 30+) are firmer while a lower rating (25 or less) is softer.
Simply put, the IFD rating of the foam will determine the feel of the mattress. A higher number translates to a firmer feel while a lower number produces softer feel. However, it is not a complete measurement of a "soft" or "firm" feel. A higher IFD rating of a lower density foam can feel soft when compressed.
You care because it's a measure of firmness, usually associated with layers in the mattress. A higher number is firmer while a lower number is softer.
Good news! You may be able to use your existing foundation so long as the following is true:
You wouldn't buy a new car with old shocks. A foundation helps prevent sagging. So it's important to maintain a quality supportive surface for your mattress. Don't risk the durability and warranty of the mattress.
If in doubt, throw it out.
This smart fabric uses thermoreactive yarn to transform your body heat into healing, infrared light. Celliant® is clinically proven to help people fall asleep faster. You’ll get deeper sleep when resting on Celliant® to help heal aches and pains and improve energy levels during the day.
Our Greenguard Fire Sock wraps each mattress and acts as a flame retardant. The rayon fiber material is made from natural cellulose and doesn't contain any harmful chemicals. It will keep you safe and healthy at night.
Our advanced, extreme open-cell memory foam Bio-Pur+™ features conforming comfort and is 70% more breathable than Bio-Pur™. This plant-based memory foam is designed to work in high-profile mattresses that require the most efficient air circulation. Bio-Pur+™ goes through an additional reticulation process unlike other memory foam that frees more space for air to circulate inside the foam.
With its large open-cell design Bio-Pur™ will soothe you to sleep by conforming to you and keeping you cool. Our original memory foam uses plant-based materials which allows us to reduce our need to use petroleum. Bio-Pur™ will adapt to your needs as you get comfortable to sleep.
Our revolutionary foam is the most advanced in fast, adaptive comfort and pressure relief. Active Flex is used toward the top of the mattress to help your bed actively conform to you. This foam responds quickly and provides an extra bounce in bed.
Surface Modification Technology (SMT) shapes precise channels into the foam. These channels provide additional areas for heat and moisture to escape away from your body. They also create zones of pressure relief for your pain points.
Affinity layers work to transition between the other layers in the mattress to enhance their responsiveness and supportiveness. This layer will soften the feel of the bed while keeping you supported.
Bio-Core is the base support of our mattresses. It works at the bottom of the mattress to keep your hips and shoulders in natural alignment to alleviate pain from sleeping.
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