14 Inch King Size Mattress The Feel Most Sleepers Prefer King Mattress Hybrid | Contouring Memory Foam Comfort & Balanced Support for Back and Side Sleepers – Medium-Firm (King, 14, 14, Inches) — Open-Box, 15% Off

Customized Comfort for Every Sleeper：Whether you sleep on your side, back, or stomach, COMFBOX adapts to your body. A plush comfort layer with gel memory foam gently cradles your curves, while pocket coils provide responsive support to keep your spine aligned.

Targeted Support Where It Matters Most：Built with zoned coils and reinforced lumbar foam, this mattress delivers extra support in the hip and lower back areas. Say goodbye to sinkage and hello to better posture—and less back pain.

Cool, Dry, and Breathable All Night：Stay cool with moisture-wicking fabrics and enhanced airflow from the individually wrapped coils. The breathable design helps regulate temperature, so you sleep fresh and dry, even on warm nights.

Undisturbed Sleep, Even with Partners or Pets：Motion-isolating coils absorb movement across the surface, minimizing disruptions from tossing, turning, or midnight cuddles. Reinforced edge support gives you more usable space—no sliding off the edge.

Certified Safe + 10-Year Warranty：Made with CertiPUR-US certified foams, free from harmful chemicals. Your COMFBOX comes with a 10-year warranty and arrives vacuum-packed for easy setup. Let it fully expand within 72 hours and sleep easy knowing you’re protected.

Experience Unmatched Comfort with COMFBOX Setup is effortless. Simply move the box to your room, unbox, and watch your mattress expand. Fully ready to sleep on in just 24 hours. At the core of COMFBOX is the Sleep System—a signature blend of breathable cooling fabric, contouring memory foam, and dynamic support layers. This three-layer top structure delivers deep pressure relief and refreshing sleep night after night. Our Hybrid Motion Isolation Layer features individually wrapped coils for advanced support, reduced motion transfer, and enhanced edge stability. Improved airflow means cooler, uninterrupted sleep. Designed for all sleep positions, COMFBOX offers the perfect balance of firmness, cooling, and pressure relief—whether you sleep on your side, back, stomach, or anywhere in between. Rest easy knowing your COMFBOX is fiberglass-free and CertiPUR-US certified, made without ozone depleters, mercury, lead, formaldehyde, or phthalates.