Sleep is a primary biological process, more than sleeping and drinking. It has in fact been determined that it is not the quantity of sleep that counts - the significant parameter and objective to be achieved is quality. Sleep is not only beneficial, but necessary. By sleeping, we recover our physical and mental energies, our spine returns to its normal shape and the right distance between the vertebrae helps us to accumulate energy and freshness.   The choice of the right mattress is therefore crucial for obtaining all the benefits of a good rest. For Somei, the need for people to sleep better has always represented and continues to represent a crucial stimulus for the creation of a range of mattresses able to provide greater well-being.