With the 900 Series Beautyrest® Pocketed Coil® Technology, the Beautyrest Silver Dearborn Plush mattress provides flexible support precisely where needed and isolates motion between two sleepers. DualCool™ Plus technology is designed to keep your mattress fresh, cool and create a comfortable sleeping environment with a moisture wicking technology at the sleeping surface. Eliminate pressure points with the unique feeling, Dynamic Response™ Memory Foam that contours and conforms to your personal shape. Dynamic Response Memory Foam Contours to Your Unique Shape Beautyrest’s memory foam eliminates pressure points and conforms to your personal shape. The Dynamic Response Memory Foam is also ventilated to increase airflow for breathability and keep the optimal temperature while you’re resting. Stay Cool and Comfortable All Night Long In addition to the ventilated memory foam that promotes better airflow, the Beautyrest Silver Dearborn Mattress also features DualCool™ Plus technology that creates a comfortable sleeping environment. Designed to keep your mattress fresh for hours of quality sleep. Moisture-wicking fabric and an antimicrobial performance layer work to keep your mattress fresh and cool while moving heat and moisture away. Does this mattress include a box spring? Yes, the Beautyrest Silver Dearborn King Plush Mattress includes your choice of either a standard 9" or low-profile 5.75" StabL-Base box spring. It is also compatible with adjustable bed frames. Can this mattress be flipped? No, this mattress cannot be flipped due to the plush top. However, as part of your regular mattress maintenance, it is recommended to rotate your mattress 180° every 1-2 months.