Discover the most supreme sleep possible with premium materials, leading sleep technology, and an advanced support system from the reimagined 17.25’’ Beautyrest Black® Series Four Summer pillow top mattress. Its ultra plush comfort level is perfect for side sleepers who like contouring comfort that responds to your movement with added support, plus a lofty, lush top layer for elevated height and comfort. Two layers of SurfaceTouch™ Gel memory foam is quilted into the sleep surface, unlocking immediate, advanced pressure relief—plus, a layer of GelTouch™ foam helps provide comfort, support, airflow and breathability. With its unique, channeled design, a thick layer of AirCool® HD foam offers greater airflow while conforming to your body for cool, enhanced pressure relief. 4K Nano coils give you double the conformability for the highest level of premium, individualized support offered across Beautyrest Black® models. Finally, a layer of Self-Response™ Latex maximizes airflow and provides responsive pressure relief. For the mattresses support system, Triple-Stranded Pocketed Coil® Technology offers the most advanced, lasting support for an undisturbed rest. Keep your cool with Sleep Climate™ Technology and Micro Diamond™ memory firm, both of which transfers heat away from the body thanks to cooling yarn tops on the surface and diamond-infused particles. This hypoallergenic mattress is made with eco-friendly CertiPUR-US foam that meets rigorous standards for emissions, content, performance, and durability. Mattress protector recommended. Adjustable base compatible.