STURDY, STRONG, AND SAG-FREE: engineered with high-quality materials to support 1,000 lbs while providing maximum comfort while you sleep. PREMIUM COMFORT: 14.5 inches of stacked layers of high-density foams and heavy-duty coils provide exceptional support and motion isolation with a medium-firm feel at a 7/10 on firmness scale. ENHANCED COOLING: The GlacioTex+ Cooling Cover and infusion of TitaniumGel in the foam layers are designed to wick away heat and keep you at the ideal temperature while the construction of the coil system promotes optimal breathability. CERTIFIED SAFE MATERIALS: This bed in a box mattress is Fiberglass-free, GREENGUARD Gold certified, and made with CertiPUR-US foams. Each mattress is carefully assembled in our own Arizona facility and delivered right to your door. We want you to be happy with your mattress and that's why we offer a 120 night sleep trial.