The Coolactive Memory Foam Lumbar Support of this Bellcross 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 and a Convoluted Plush Fitness Foam. The resilient latex foam and Tri-Zoned Wrapped 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 Bellcross Eur Top mattress.