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Memory foam is a viscoelastic material. “Visco” means that it is thick and resistant to change, and “elastic” means that it reforms its shape after being distorted. Normal foam is merely elastic, while memory foam can “remember” the shape of an object pressed against it (such as a sleeping human). This “memory” means that memory foam can support the weight of sleeping body in a much more even, balanced manner than any normal mattress.
There are many who find their lives greatly improved by switching to a memory foam mattress. People suffering from chronic back, shoulder, neck, or other joint pain are almost always delighted by the way memory foam eases their discomfort. Others who are uncomfortable on standard mattresses or who are easily awoken by their partner's movements find memory foam mattresses invaluable.
Memory foam comes in many different feels. These are determined by density, firmness, and thickness.
Memory foam was originally developed by the United States space program to dampen impacts and protect its astronauts. Originally known as CONFOR foam, it helped keep astronauts safe during take-off and landing.
It then spread to other areas where high g-forces were experienced, such as seating in airplanes and helicopters, as well as situations where people had to remain immobile for long periods of time, such as in hospital beds.
As the manufacturing process became easier, enterprising engineers brought it into the public market, where it quickly revolutionized the sleep industry.
Density is the measure of just how much material is in each cubic foot of your mattress. Mattresses foam usually comes in densities of 3 to 7 pounds per cubic foot—industry leaders Tempur-Pedic® and Amerisleep use foam that's between 4 and 5.3 pounds per cubic foot.
More density is not always better! Lower density foam tends to have less “memory” and is softer than higher density foam. Foam with a density greater than 5.3 pounds per cubic foot tend to make you feel “stuck” or “trapped” in your bed once it has adjusted to your body.
The firmness of memory foam decreases as temperature increases. That's why we use thicker foam on the top of your mattress (where you body will heat it up) than on the bottom.
How do you decide what level of firmness is right for you? A great place to start is your current bed—is it too soft? Too firm? Aim to fix whatever problems that you're having now, first. Then, think about your usual sleeping position. Back sleepers will usually need a firm mattress, while side and stomach sleepers should consider something softer.
And if you don't get it exactly right the first time, don't worry! Our 90-day guarantee means that you can trade mattresses until you find the one you need.
Consider your body's shape and match it with the proper firmness to give you proper and natural spinal alignment.
It's not just about firmness and density—the thickness of each layer in your mattress has a powerful effect on how it feels.
Using customer feedback and our own research, we've determined that anywhere from 2” to 7” of memory foam is just about right for your top later. The thinner the top layer, the closer you'll be to the support layer underneath, and the firmer your mattress will feel.
The short version? The higher the IFD number is, the firmer your mattress. The lower the number is, the softer your mattress. Ratings above 30 are usually considered “firm,” while anything below 25 is “soft.”
For those who are a bit more curious, here's the full explanation: IFD stands for indentation force deflection. It's a measurement of the amount of force required to push a round testing foot into a foam sample to a certain percentage of its thickness. However, it's not a measurement of density, and so a low density foam with a high IFD rating can still feel soft when compressed.
This is another reason why we offer our 90-day trial of any mattress you order. With so many factors to consider, it's much easier to just try and bed and see if it works for you.
Not always! Your box spring may still have years of life in it. Here are the things you'll want to look for:
If it's still in good shape, you may be able to reuse it. Be careful, though, because a worn-out box spring will prematurely age your mattress, damaging your investment and keeping you from getting good sleep. You may save money in the end with a quality foundation.
When 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.
Certified to provide a healthy alternative to those with chlorine, halogens, and PDBEs, while still providing fire retardant safety.
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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