The ESS7 series is a step-up in the Essentialsâ„¢ Collection, with more Responseâ„¢ Open Coils for adaptive support, additional layers of comfort foams, like SealyCoolâ„¢ Air Gel Foam and SealyCoolâ„¢ Gel Foam create a comfortable sleep surface. A reinforced mattress edge give you more sleep surface use and increased durability. This great value mattress just what you need for a good nights sleep.