The Sera Perfect Sleeper Renewed Firm Mattress combines support, pressure relief and cooling elements to give you a comfortable nights rest. Embrace the support and motion separation of the Individually Wrapped Coils. The exclusive HexCloud™ Gel Foam provides pressure relief while it relieves pain. Feel the coolness of the CoolFeel™ Fabric cover as you settle into bed. Additional firming comfort foams like Serta® Support Gel Foam, make this a very inviting mattress. This firm mattress is good for a stomach or back sleeper.