Comfort Foam or Comfort Layer is a layer of foam that is put on top of a support system to make it feel more comfortable. Based on the firmness or softness of the Comfort Layer can make a support system feel different from one another. For more info on Feels like Firm, Extra Firm, Plush, Soft Pillow Top and Much More click here. There are different materials used as a comfort layers, the most popular is foam. There are three types of foam: Polyurethane foam, Memory Foam, and Latex. All Three Comfort foams are used on top of all 5 Support Systems. Some other comfort layers used are wool and cotton. While these two are not commonly used as comfort layers they are used in some very, very high-end mattresses.
Polyurethane Foam is the most common and cheapest comfort layer used in mattresses. Polyurethane Foam is also used for the core of all foam mattresses. Polyurethane Foam can come in many firmness’s or ILD and densities. Most people think the higher the density in the foam the firmer it is but that is not the case. The firmness is measured in ILD. Density is how much a 1-foot by 1-foot cube weighs. The higher the density in a foam cube then there is less air in the foam. The lower the density in foam, the more air it has. Polyurethane Foam cost less than other foams but does tend to break down a lot faster then the other foams. For a in-depth look into Polyurethane Foam click here.
Memory Foam or visco elastic foam was developed by NASA in 1966 to improve the safety of aircraft cushions and in the 1980s was released to the public. Then in 1991 the first memory foam mattress was developed and called Tempur-pedic. Memory Foam is a slow reacting foam made to conform to your body and relive pressure. Memory foam is the second most popular foam used in mattresses and cost more than polyurethane foam but last a lot longer. Polyurethane Foam tends to only make a mattress feel firmer or soft. However, Memory Foam can make a mattress feel firmer or softer, reduce pressure, and motion. The biggest complaint about memory foam when it was first released was that it was hot. There are a lot of new technologies out there to help reduce and or eliminate the heat like Gel Memory foam. For a in-depth look into Memory Foam click here.
Latex is the third most common foam used in a mattress. Natural or organic Latex is made from the sap of the Hevea Brasiliensis tree, also called the rubber tree. I know what you are thinking, latex like the bandages or gloves? No they are very different types of latex and I am personally allergic to latex but not the latex in beds. There are two primary types of latex out there. The two types are Dunlop and Talalay Latex. Both are natural latexes the names of from the processes used to create the latex. Latex is the longest lasting foam and the most expensive foam used in a mattress. There are a few different types of latex out there other than Dunlop and talalay for more info on latex click here.
Wool was used primary in mattress before the development of foams but there are still some brands out there that currently use wool in their mattresses. These mattresses tend to be very high-end mattress and use a type of wool called New Zealand Wool. This type of wool is very luxurious feeling and long lasting.
Cotton is still very common in the quilting of the mattress but is not very common as a comfort layer. Just like any fiber filled pillow, cotton tends to move around very easily and needs to be fluffed or it will flatten out and loose its shape. You will not really see cotton in any of the name brand mattress like Serta, Sealy, Simmons or Sterns and Foster but you can find it in the very high end and luxury mattress.