Our HZ Sleep Moonstone II Firm mattress is perfect for back sleepers, couples, and those needing pressure relief. Combining the best of both worlds - this extra firm mattress features 2 layers of High-Density Soft Foam, 1 full layer of Cool Gel Memory Foam, 2 full layers of High-Density Support Foam, and Zoned Individually Pocketed Power-Packed Coils. Our Moonstone II Extra Firm mattress has a durable support system that provides ease of movement. In combination with other supportive layers and materials, it delivers customized support exactly where your body needs it most. The Cool Gel Memory Foam is a specially formulated memory foam that contains gel beads designed to help absorb heat and draw it away from the sleeper. With 25% thicker coils in the center ⅓ of our mattress, it is optimized for pressure relief, providing ideal support to your back and hips. The edges are reinforced with a foam encasement providing you added durability, more sleeping area, a solid seating surface, and better flexibility when paired with an adjustable base. Finally, it is topped with a luxurious Cooling Cover made to wick moisture and heat away from your body, providing you and your partner with a healthy and neutral sleep surface. Let our HZ Sleep Moonstone II Extra Firm mattress help you fall asleep faster, sleep cooler, and help you wake up feeling refreshed!