The ComforCare Liberty Mattresses are well made, affordable mattresses. An innerspring coil unit, with 25% more steel coils in the lumbar region, give you the support you need. These coils are surrounded by 3" thick dense foam giving you a firm seating edge and less roll off. Layers of comfort foam including Coll Gel Memory Foam, supports and cushions you with a cooling effect to keep from over heating. These mattresses are a great value.