European Bedding latex mattresses are designed with 7 comfort zones for maximum body support and comfort. Each zone conforms individually to the different parts of your body. The shoulder zone is slightly softer as our shoulders stick out more, while the middle zone is slightly firmer as our lumbar area, where the heaviest part of our body rests, needs more support to keep our spine in its natural position during the night. A firmer middle zone prvents the mattress form asgging and guarantees a longer lifetime of your mattress. Proper alignment of your back as shown in the picture below is very important for your spine to properly recuperate during the night. The zoning also facilitates pressure distribution, which promotes a good blood circulation.. As a result, you will have a more relaxing and comfortable sleep and wake up refreshed.