The Revive Blue Oasis 12" Hybrid Medium King Mattress pairs responsive support with cloud-like comfort in a 12-inch profile, designed to balance spinal alignment and pressure relief. Its internal construction blends a 50% steel coil core for responsive support with 40% foam layers that provide plush, pressure-relieving cushioning and motion isolation, while a 10% breathable fabric cover promotes airflow. Edge reinforcement keeps the sleeping surface stable across the king size, and the mattress works with standard bed frames and box spring foundations to provide a dependable base for restful nights and versatile sleep setups.