What makes King Koil mattresses different from all the rest? The high quality of materials used and more than a century of mattress making experience do, to start. King Koil offers many different styles of mattress, and the Spine Support line of beds is one of them. This special collection from King Koil is designed to give you the excellent support and superior comfort that are sure to help you sleep comfortably through the night. The Spine Support collection uses a unique coil system with varied spacing. This means that some coils are grouped closely together while others are spread farther apart for the ultimate in comfort with a mattress that conforms to the shape of your body and still offers you the support that you need to get a great night of sleep. This system is known as the three-zone Bonnell Innerspring System. The materials used in the Spine Support line of beds is high quality and expertly assembled, just as with any of the other King Koil lines of beds. You will be bringing home a turn-free memory foam mattress with five-zone contoured quilt foam, an impression resistant polyester fiber pad, and a stability flex foundation. In other words, with the Spine Support mattress line from King Koil, you will be bringing home the means to superior comfort and superior sleep.