Density in foam is a measurement of how much substance, or chemicals, are put into each cubit foot. So, the higher the density, the heavier the sample. For example, a cubic foot sample of 3 lb memory foam will weigh 3 lbs, and a cubic foot sample of 5 lb memory foam will weigh 5 lbs.

There are two types of foam used in our mattress, just like every other memory foam mattress out there. The visco-elastic memory foam on top, and the support foam on the bottom. Most companies selling memory foam mattresses push information about the memory foam, which is very important, but they lack information about the support foam, which is almost equally important.

Memory Foam

Our memory foam is a unique, advanced visco called TruCell. The TruCell visco elastic memory foam has a 4.0 lb density. In tests, it was determined that more people liked the 4.0 lb TruCell visco for two main reasons. The first was the issue of heat, or lack of heat. The memeory foam samples that were more dense proved to hold more heat than the 4.0 lb. Also, it didn't leave too much of the "crater" dip that many memory foams are known and disliked for. It has the perfect amount of support and contouring, but still allowing you to turn and adjust in bed comfortably.

Support Foam

The density of the base foam will determine how long the mattress will last, and the firmness will determine the amount of support it gives your body. The M-Grade base support foam has a density of 2.1 lb and an ILD of 32. Typically, average mattresses have support foams with densities ranging from 1.5 lb to 1.8 lb, 1.8 lb being for nicer mattresses. It's rare to find mattresses with base foams more dense (or better quality) than this. That's why we've decided to provide this quality. And for this reason, we can offer a 20 year warranty. The ILD (firmness or softness) of the 32 is considered firmer. This does not mean the mattress overall is more firm, but only the support foam. The purpose of a memory foam mattress is for the memory foam to cradle you, and the support foam to "support" your weight underneath.

The most common complaint with memory foam mattresses in general is that it can sometimes make a person feel warmer. Memory foam is very dense foam, making it harder for heat to escape. The more dense the foam, the less air flow for heat to escape. To overcome this problem, we use TruCell memory foam, which has an open-cell structure. The open-cell structure allows heat to escape and air to flow around the body, creating a more comfortable sleeping environment.

Unlike other open-cell structure memory foam, our proprietary chemical formulation translates into a more temperature neutral foam where heat is not allowed to build up. The engineering team met the challenge of addressing consumer comfort by inventing foam chemistry solely for eliminating the natural tendencies of heat associated with memory foam.

It is a fact that we use the coolest memory foam made by anyone. This has to do entirely with the shape of the molecules in the memory foam. There is no molecular shape that could dissipate heat better, and this molecular shape is patented. Though many other memory foam manufacturers advertise "cool memory foam", none dissipate heat as well as this memory foam. Lab tests show that standard memory foam can allow heat and air to move from side to side fairly well. However, other foams do a poor job of moving air from top to bottom, which contributes more to cooler sleep. It is important for heat to be able to move down into the mattress so it can be pulled away from your body.

Our memory foam feels cool to the touch. When placing your hand between two pieces of TruCell memory foam, you can actually feel the heat being pulled away from your hand.

Very little. Just like a new car has that "new car smell", all new mattresses have a new mattress smell. Typically, more dense foams, like memory foam, have a stronger odor because there is a higher concentration of material packed into a given space. Fresh Foam Technology used in TruCell memory foam alleviates odors associated with new memory foam. TruCell visco is "virtually odorless" visco foam because of the new proprietary chemistry of the open-cell structure, allowing it to breath much easier. In addition, our TruCell memory foam will continue to eliminate odors through the use of activated carbon. It's the same type of material found in premium air filters and other odor filtration devices.

In your search for a memory foam mattress, keep in mind that 5 lb memory foam has more substance and chemicals packed into every square inch, causing it to have a much stronger odor and keeping it from breathing as well.

Absolutely. A higher density foam will almost always last longer than lower density foam. But, keep in mind, the memory foam is not the only foam in your mattress. The support foam usually has a density of 1.5 lb to 2.1 lbs, which is what acutally holds your body weight. Because memory foam is much more dense than the support foam, it will outlast the support foam in any mattress you look at. This is why it is so important to consider the density of the support foam. Our M-Grade support foam has a density of 2.1 lbs. Typically, average mattresses have support foams with densities ranging from 1.5 lb to 1.8 lb, 1.8 lb being for nicer mattresses. It's rare to find mattresses with base foams more dense (or better quality) than this.

To answer this question, please read the answers to questions Why does your foam sleep cooler? and Does your memory foam have an odor?

In addition, Strut reinforcing cellular technology (SRT) provides strength in the cell structure unsurpassed in the industry. SRT made its debut in the spring of 2005. This technology serves two purposes. The first is that it overcomes the cradling effect that many people find to be a nuisance when trying to roll over at night. TruCell memory foam fills in behind you as you turn in bed much quicker than most other memory foams. The second purpose SRT technology serves is that because the walls of the memory foam cells are reinforced, or stronger, it holds up much longer than any other memory foam of the same density on the market.

M-Grade support foam technology is only a few years old. It is much more advanced and created specifically for the bedding industry. HR foam (High Resilency) is used by almost every memory foam mattress manufacturer uses HR (High-Resiliency) for it's support, as well as in most other furniture, like sofas. Laboratory tests show that body impressions in a mattress are caused less by weight than what was always previously believed. Tests have shown that salts and moisure from the body actually break down HR foams, leaving body impressions. This is why many times a small person can have a deeper body impression than a very lager person. M-Grade foam does not react the same. M-Grade foam holds up remarkably better in these conditions than any other polyurethane foam currently on the market that has been tested. What does this mean for you? It means a much longer lasting mattress.

This base foam also uses Strut reinforcing cellular technology (SRT). This provides strength in the cell structure, which helps to prolong the life of the foam. You'll notice when you open the mattress for the first time, which will be compressed into a smaller box, the support foam rebounds back to its' original size within seconds. This cannot be said for most any other foam on the market. This is due to the quality of the foam and the reinforced cell structure.

Memory foam mattresses work best with a solid foundation. If you use a boxspring (with springs), you will not get the correct support. However, if you have solid foundation in good condition, it will work just fine. Something to avoid, though, is to purchase a foundation from another retailer that was not specifically matched with these mattresses. Because of new Fire-Retardant laws (TB1633), making it required that a mattress and foundation set be burn tested together, it is illegal for a retailer to sell a mattress that has not been "burn tested" together.

The Versiflex foundation is made of solid Canadian White Spruce. It has twice as thick and three times as many lateral slats as most other wood foundations.

No, there is no flipping required. We do recommended rotating the mattress from head to foot every six months.