KEY DETAILS Learn more about our collaboration with Leesa . 13.5" high, 7-layer foam and dual-spring hybrid mattress with a medium-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. 1.5" Gel-Infused Quilt Foam: Cushions the body while promoting a cooler sleep surface and resisting body impressions. 1" Ultra-Supportive Memory Foam: Contours to the body to provide pressure relief to the shoulders, hips, and back. 0.75" Stress Relieving Micro-Springs: Up to 2,756 individually wrapped micro-springs designed for maximum pressure relief while virtually eliminating motion disturbances. 1.5" GreenFlex® BioFoam, 3 lb: Certified by the USDA BioPreferred Program, this renewable, plant-based foam is engineered to deliver cooling, pressure relief, and durability. 8" Zoned Lumbar Springs: Up to 1,032 individually wrapped springs reinforced under the hips to help cradle the body, align the spine, and provide advanced lumbar and edge support. 0.75" Durable Support Foam: High-density base foam designed for lasting durability and signature support. Adaptable comfort for back, stomach, or side sleepers. Coordinates with platform beds and slatted bases with no more than 4.5" between each slat. Ships in a box; once unboxed and unwrapped, it expands and is ready to use within minutes. Limited lifetime warranty. Leesa has donated over 43,000 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 free 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.