Mattress toppers are a very hot item nowadays. There are several reasons for this and I'll get into them below. First of all, though, it's important to understand what exactly memory foam is. This is really quite simple. This type of foam differs from regular foam only in one way really. It has the ability to "remember" a certain shape. Regular foam will change form under pressure but will always, and almost instantly, return to it's original shape once that pressure is gone. Memory foam, on the other hand, is sensitive to heat and acts slightly different when put under pressure. This material will keep a new form as long as there is a bit of heat applied to it. Think about this in terms of a mattress. Your body throws natural heat right? Well this heat on a regular mattress doesn't really do anything. On a mattress made from memory foam, however, it forms a mold specific to your body type.
This, in turn, provides support for a number of different body types.Using a foam mattress topper as opposed to an entire mattress made from this great material is good for a couple reasons. The most important is cost. Entire memory foam mattresses are very expensive. It's much easier to just by a 5" mattress topper and throw it on your existing bed. It's also a heck of a lot easier to transport. Have you ever had to move a bed? Not Fun! Get yourself a topper made from this wonderful material and you'll be good to go.
Memory Foam Mattress Toppers - An Overview