The Coolactive Memory Foam Lumbar Support of this Rivendell Euro Top mattress from Kingsdown will support and comfort your lower back throughout the entire night. Dissipating body heat quickly for a cool and comfortable night's sleep, this mattress features a Gel Quilting Foam in addition to the Firm Fitness Foam. The resilient latex foam and Tri-Zoned Wrapped Micro-Coils work with the cooling layers to provide support that is personalized specifically for your body while also relieving pressure. A deep, calming night's sleep awaits you with this Rivendell Euro Top mattress.