A memory foam topper is a very easy way to improve the comfort of your bed. A topper is a bit of bed that goes on top of your current bed in order to make it softer or firmer. If your bed is too soft - get a topper. If your bed is too firm - get a topper. Or if you just like a little extra comfort in your bed then a topper can be a very convenient way to get there. Memory foam toppers are some of the most popular types of toppers that are around. It's because everyone loves memory foam. They actually create a mould of your body. If you press your hand into some memory foam then you will leave an imprint of your hand that will slowly return to the flat, normal shape of the foam. Memory foam toppers come in a variety of shapes and sizes. Memory foam toppers are also made in a variety of thicknesses. The most common is a two inch, since this is the cheapest option, but there are also more. People who like a firmer bed might decide that they prefer a thicker topper (as well as a firmer one, but I'll get that a little later). The thicker the design of the topper the deeper the mould can be. The deeper the mould can be, the bigger the imprint and in some people's opinion, the greater the comfort. It's of course up to you though. Memory foam also comes in a variety of densities. Density ratings refer to how long it take sometime to sink into the design as well as how much weight is required to make an imprint. They provide a much firmer feeling to the memory foam and they are popular with people who like that firmer quality to their bed. Why is a topper that bends to your body a good idea? Well, you'll find that the parts of you that need supporting will get it. Many bed topper actually change the density along the bed. . . so that your torso - as an example - is supported more than the head (which is much lighter). The foam distributes weight evenly across the surface of the bed so that you'll find your weight is comfortably looked after.