If you want a Select Comfort bed you should what distinguishes the company from all of the rest of the makers of beds. Basically, the Select Comfort bed utilizes the technology of air chambers. The air pockets that the mattress utilizes offer a great night's sleep for your body. The result is that there will be different levels of support for different parts of your body. This makes it perfect for those people who have trouble sleeping on surfaces that are supported only with foam or springs. Select Comfort utilizes a system of numbers which calculates the firmness, support, and comfort level that you need and assigns a number between zero and 100. Any Sleep Number Bed store will show you how to find your number and will map your pressure points with an Xsensor system that maps pressure. This system uses a special bed with 684 individual sensors that measure the amount of pressure between the mattress and your body. The system displays a heat map and if you adjust your sleep number you will see that the pressure points will be greatly lowered and allow you to sleep more comfortably. This is one of the primary benefits of this air bed over conventional innerspring mattresses. Studies The company has sponsored several scientific studies to determine the effects of their system on sleep quality. These studies took place at well respected institutions such as Stanford University and Duke University Medical Center. Many participants of a recent study reported that their sleep improved significantly as compared to an innerspring mattress. These participants experienced less tossing and turning during the night, better sleep, and increased energy. Although many people are often suspicious of the findings of scientific studies that are funded by the company that sells the product, this study has some merit as a result of the fact that it conducted by physicians from prestigious universities. Prior to purchasing a Select Comfort bed, you should research the criticisms that have been made against it. For example, many people say they have problems with the uneven sleeping surface, and others have trouble finding the right number for them. Some others say that the customer service is poor and report mold in the mattress. All in all the advantages of the Select Comfort bed far outweigh the disadvantages. You should do some research before you buy the bed because it is worth doing some research to get a good night's sleep.