This Zinus Cooling Airflow Memory Foam Mattress feels medium firm and is designed to keep you cool and comfortable at an affordable price. The top layer is made with breathable gel memory foam that helps to regulate your body temperature and relieves pressure on your joints. This special foam keeps you cool all night long, so you wake up feeling refreshed. Plus, every layer of high-quality foam in this mattress is CertiPUR-US® certified safe, so you can sleep soundly knowing there are no harmful chemicals where you sleep. Mattress ships in an expertly compressed box designed to leave a smaller carbon footprint. Choose from 5 profile sizes for optimized comfort that best fits your needs. A 10-year warranty assures your peace of mind. Age Group: Adult, Universal. Zinus 12" Cooling Airflow Memory Foam Mattress, Adult, Queen Breathable Airflow memory foam conforms to your body shape, relieving pressure points and improving circulation for better comfort A soft, breathable cover keeps you at the optimal temperature for a peaceful sleep, preventing overheating Made with high-quality CertiPUR-US certified foam and wrapped in an OEKO-TEX certified cover, this mattress is free of harmful chemicals for healthier sleep This mattress ships in a smaller box expertly engineered for a smaller carbon footprint Rest easy with a 10-year limited warranty. Please allow 24-72 hours for the mattress to fully expand