Serta Sleeptrue Firm 11" King Hybrid Mattress in a Box, Cooling, Breathable, and Pressure Relieving - 100 Night Trial, CertiPUR-US Certified and 10 Year Limited Warranty

Designed with cooling gel memory foam, this mattress seamlessly blends value and convenience with the durability and trusted comfort Serta is known for. This collection offers all-foam and hybrid designs with 3 zones for lower back support* and breathable fabric, so you wake up refreshed. This Serta Mattress-in-a-Box collection delivers comfort at a value with convenient delivery—so you can rest easy night after night. *Only available in select Serta models

• SUPPORT ZONES - Featuring 3 Support Zones* designed to deliver support where you need it most, delivering exceptional lower back care and a better nights sleep
• COOL TWIST GEL MEMORY FOAM - No one likes to sleep hot, that is why use cooling gel swirled into premium memory foam. This offers enhanced airflow, heat dissipation, and contouring comfort
• CONTOURING HYBRID SUPPORT - Our Serta 800 Edition custom support coils are individually wrapped and durable, offering exceptional support throughout the night while increasing breathability
• BREATHABLE HIGH-QUALITY MATERIALS - A soft, breathable cover promotes airflow and helps you rest and wake up refreshed while our Pillow Soft Aire foam layer offers enhanced cushioning for exceptional comfort and airflow. High quality materials give the mattress a premium look and feel and feel
• SIMPLE PACKAGING AND DELIVERY - Compressed and packed neatly in a box that is delivered right to your door. Just open the box, unroll and unwind! It is normal for the mattress to take up to 72 hours to fully expand and one to two weeks to air out