The Grenshaw Tight Top is unique in it's supportive construction.  Individually Wrapped Coils, zoned with three different gauge wire, providing more support as you move to the center of the mattress, helping to keep your back aligned.  Layers of comfort foam including Gel Infused Memory Foam and Plush Fitness Foam, provide a firm support, yet comfortable feel.  A good mattress for a back or side sleeper. 

10 year warranty