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Memory Foam Buyer's Guide

Page 3

Thickness and Density
 

Question: What’s The Best Thickness For A Topper?
Short Answer: Depends on the Density.

Toppers come in a few thicknesses, ranging from one inch up to five, or even more. In my opinion, the reader should not consider a topper that is less than two inches thick. In my research, I didn’t run across any one inch toppers that really did what they were supposed to do. Such a thin foam layer compresses too easily, and the result is that you simply “bottom out.”

The one exception occurs with very high density foams, maybe six lbs. or higher. A foam with this density will provide reasonable support, but it’s very expensive. You pay a premium for the density, so I think it makes more sense to go with a thicker layer (2-3” minimum) of lower-density foam; somewhere between 3 and 5.5 lbs.

If your existing mattress already has a pillow top built into it, even a two inch topper might be good choice for you. The added cushioning of the pillow top will make the foam work better, so a relatively thin layer can do a lot for you.
 

Question: How Important Is Density?
Answer: Very Important.

I’ve already made reference to the different densities that are available in memory foam. Density is one of the more important things to consider when shopping for your topper. You will notice as you do your research that there are several different densities of memory foam, and they all come with a different price tag. These densities are expressed in pounds per cubic foot, and they range from two, all the way up to 5.5 lbs. and beyond.

I’ve found that the higher density foams, the ones above six lbs per cubic foot, are not only more pricey, but ironically, they’re usually less comfortable. Because they “give” less, they aren’t quite as effective at distributing pressure and they’re also pretty slow to rebound. The lower densities have the opposite problem, they’re a bit too soft, and don’t have much of a “memory.” I’ve found that the most comfortable foam has a density that’s somewhere in the middle, from 3 to 5.5 lbs. per cubic foot.

 

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