KEY DETAILS Learn more about our collaboration with Leesa . 13.5" high, 6-layer foam and spring hybrid mattress with a cushion-firm feel. Ultra Cool Cover: Infused with cutting-edge cooling fibers to help draw heat away from the surface of the mattress for a cool-to-the-touch feel. 1.75" Quilt Foam: Resists body impressions with gel infusion that provides optimal cooling comfort while you sleep. 1.5" Copper-Infused Memory Foam: A cutting-edge water-based surface infusion of copper for cooling and promoting an antibacterial sleeping environment. 1.5" Responsive Foam: Adaptable memory foam that bounces back for ultimate support and cushioning. 8" Zoned Lumbar Springs: Up to 1,032 individually wrapped springs reinforced under your hips to help cradle your body, align your spine, and provide advanced lumbar and edge support. 0.75" Durable Support Foam: High-density base foam designed for lasting durability and signature support. Coordinates with platform beds and slatted bases with no more than 4.5" between each slat. 120-night trial; you may return your mattress for a full refund within the first 120 nights. Ships in a box; once unboxed and unwrapped, it expands and is ready to use within minutes. Lifetime warranty. Leesa has donated over 41,000 mattresses to children and families in need across America. GREENGUARD Gold Certified . This low-emitting product has been screened for over 10,000 chemicals and VOCs. CertiPUR-US® Certified: All foams in this product are certified to be safe for both you and the environment. The CertiPUR-US program guarantees that they are made without any harmful chemicals including ozone depleters, PBDE flame retardants, mercury, lead, heavy metals, formaldehyde, and have an extremely low impact on indoor air quality. Protected by a chemical-free and fiberglass-free fire barrier. This item ships from Leesa to your home, arriving within 4-9 days of order receipt. If you decide that your mattress isn’t right for you within the first 120 nights, you may return it for a full refund. Contact support@leesa.com or (844) 335-3372 to initiate a return.