High density foam is just your typical foam. It does not conform to your body when it heats up like memory foam does.
The truthful answers is: "It's the thickness you are willing to pay for". One manufacturer I know of makes memory foam mattresses in three configurations: The top 2" of the mattress is memory foam, the top 4" is memory foam, and the whole mattress is memory foam. The price varies accordingly. Personal Note: If you can't afford a memory foam mattress, try a memory foam pillow. Awesome, especially if you're a "side sleeper".
Many people find memory foam mattresses far superior to spring mattresses and would agree that cheap memory foam is better. Make sure to check overstock.com for awesome prices on memory foam mattresses that are highly rated.
The benefits of using a memory foam mattress topper are, body weight is equally distributed, heat sensitive memory foam, provides extra pressure and relief for a more comfortable sleep.
No, it doesn't require box springs. My roomate just sleeps on his on the floor. There are many options of what you can put underneath your memory foam mattresss.
Getting a good nights sleep can be difficult, but double memory foam mattresses are designed with this in mind. Double memory foam mattresses offer the the spinal and body support, and minimize the absorbs movement so you are not disturbed, and can sleep peacefully through the night.
Many companies offer memory foam mattresses, which may vary in quality. The following guide provides simple tips for finding a high quality memory foam mattress. When looking for a memory foam mattress, look for information on the density of the foam. Lower density foam is often cheap and low quality, while higher density foam provides a more comfortable sleeping experience. A high quality mattress should contain at least 6 inches of high density memory foam, with lighter foam layered on top. When buying a mattress, make sure that the foam is genuine memory foam. Squeeze a sample, and see how long it takes to expand. If the foam expands to it's original shape in less than a second, it's not memory foam.
Tempurpedic is a patented trademark name for foam mattresses that offer body temperature regulation. Memory foam is the most generic of these terms, and 'visco' is a specific type of high-grade. dense memory foam.
Memory foam is polyurethane with additional chemicals increasing its viscosity and density. A lower density memory foam is pressure sensitive and molds quickly to the shape of a body pressing against it, returing to its original shape once the pressure is removed.
Polystyrene is a plastic that can be made into many products, which can be dense, or can be in the form of a low density foam, called Styrofoam.
From the name it seems that 2.5 is the answer. 2 and 1/2lbs per cubic foot of material. What is considered good quality memory foam is usually 5.0 or more.
Memory foam is made from chemically-altered polyurethane that reacts to body heat, allowing the pillow to form to the users unique shape. The polyurethane used is of a higher density than normal, an attribute that results in the memory-foam keeping its shape, rather than returning to it's original form.
Memory Foam forms and shapes itself to the pressure points in a person's back, offering a higher level of comfort over spring-based mattresses.
Memory foam mattresses respond to temperature and weight by automatically shaping themselves to a sleeper's contours, providing a unique sleeping experience. Not all, however, have equal density. The best ones are dense enough to absorb shock. Sharing a quality memory foam mattress with a restless sleeper won't disturb you. Bring a friend mattress shopping with you. Sit on one side of the mattress and ask your friend to sit on the other, then stand up and sit down again. If you feel your friend standing and sitting, look for a mattress with denser memory foam.
Memory foam is made up of a polyurethane foam material with is molded into a form of a mttress, pillow, and so on.
Instead of purchasing a complete cushion made out of memory foam, it is possible to add one or two memory foam toppers to a regular foam cushion. This will give the support but will not be as hot or as prone to permanent indentations as memory foam.
Latex and memory foam mattresses each provide a unique feel. This type of mattress is good at relieving pressure on painful joints. Many memory foam mattresses are more expensive than standard spring mattresses. Memory foam is affected by temperature. In a cool bedroom, a memory foam mattress will feel firmer than it does in a warm bedroom. Memory softens and conforms to the sleeper in response to body temperature and body weight. Traditional memory foam molds to the body creating a depression the sleeper must roll out of when changing sleep positions. Mattress manufacturers have responded to this issue by using "faster response" memory foams. They spring back more quickly when the sleeper moves. Foam mattresses are also known to generally "sleep warmer" than innerspring mattresses. Mattress makers have addressed the issue with "open-cell" memory foams, pinhole cored memory foam, gel-infused memory foams, channel-cut foam cores, reticulated foam support layers and other technologies to improve air circulation through all-foam beds. High density foam: Similar to memory foam mattresses
The main difference between a foam and a fiberglass surfboard is in their strength. Fiberglass has many layers which give it increased durability without increasing weight significantly.