Instant-cool cover: GlacierTex MAX cooling cover uses 80% more cooling yarns for a cold-to-the-touch surface that helps hot sleepers stay temperature-balanced all night. Lifted, firm support: Luxury-firm hybrid feel keeps you elevated on top of the mattress with strong alignment for back and stomach sleepers who do not want to sink in. Pressure relief without sink: 1" TheraGEL Mineral Memory Foam plus 2" Serene Comfort Foam deliver breathable, contouring comfort that eases pressure without trapping heat or body impressions. Targeted lumbar lift: S-LUMBAR 3Z PRO zoned support with reinforced lumbar coils lifts the lower back, supports the S-curve of the spine, and helps reduce morning stiffness. Edge-to-edge airflow & stability: 1,044 individually wrapped coils promote cooling airflow, limit motion transfer, and create a rock-solid perimeter for full-use sleeping surface. Experience a lifted, cool-as-“not”-hell sleep surface with the SlumberCool MAX Hybrid 3Z PRO Firm, designed for back and stomach sleepers who prefer to rest on their mattress, not in it. The GlacierTex MAX cooling cover delivers an instant cold-to-the-touch feel using 80% more cooling yarns, helping heat move away from your body instead of trapping beneath you. Beneath the cover, 1" of TheraGEL Mineral Memory Foam infused with silver, copper, and graphite offers cooler, cleaner comfort while providing deep, even pressure relief across shoulders, hips, and joints. A 2" Serene Comfort Foam layer adds breathable, no-sink pressure relief so you stay supported without feeling swallowed or overheated. Below that, 2" of Slumber Plush Transition Foam creates a smooth shift into the support core while keeping airflow channels open. At the core, the S-LUMBAR 3Z PRO Support System uses 1,044 individually wrapped coils with targeted zones to lift the S-curve of your lower back, ease shoulders and hips, and maintain edge-to-edge stability. Reinforced lumbar coils keep your midsection from sagging, helping maintain proper alignment for back and stomach sleepers who need reliable support night after night. The open coil design promotes continuous airflow through the mattress, so hot sleepers experience consistent temperature regulation instead of heat build-up. Motion is isolated across the coil network for fewer partner disturbances, while the rock-solid perimeter support lets you sit or sleep near the edge without feeling like you might roll off. If you are done compromising on cooling, support, or pressure relief, this mattress delivers a fully upgraded, ultra-cool, and predictably balanced sleep experience.