Experience the best of Beautyrest with the Black Series Three 15"" Firm Mattress, featuring advanced temperature management technology, Micro Diamond Memory Foam, and advanced, Triple-Stranded Pocketed Coil Technology for conforming support and motion separation. Self-Response Latex offers a specialized upgrade for responsive pressure relief, as it contours to relieve your body's unique pressure points while maximizing airflow for cool sleep every night. With the inclusion of premier materials and advanced sleep technology, the Beautyrest Black Collection optimally aligns at the intersection of luxury and innovation for an extraordinarily comfortable sleep.