A good mattress should be able to support your body properly. The good side is that you can easily find the density by taking a look at the package and from the package you will know whether the unit is of cheap, min-grade or good density.
Cheap foam has a density of 2-3 lb, mid-grade has a 3-4 lb density, while a good form has a density of over 4.5 lb. According to experts, the foam that supports the body maximally is one that has a density of between 5.3 and 6.2 lbs.
This is another important factor that you should consider. The good side is that you can easily determine whether the unit will be durable or not by simply looking at it. For the unit to be durable, it should contain medium or high-density foam. As rule of thumb it should not contain layers of cheap materials.
Since the mattress tends to be expensive, you should consider the warranty issue. To be on the safe side, you should buy from a company that offers a long warranty.
While it’s advised that you go for a company offering a warranty, you should avoid buying from a company that has been in business for a short period of time. To be sure that the unit you are buying is of good quality you should buy it from a company that has been in operation for over five years.
Different companies sell the units at different prices; therefore, you should take upon yourself to compare the different prices. One of the best places to compare the prices is online. You should visit online stores and compare their prices.