Stay cool and comfortable all night! Nectar California King Mattress is a premium memory foam mattress that cradles your shape and keeps your body at the premium temperature for optimum sleep. Gel-infused memory foam cushions every curve while Dynamic Response Premium Foam provides breathable support and pressure relief, plus crucial rebound and bounce. Last but certainly not least, a cool-to-the-touch, breathable cover delivers more airflow and helps with temperature regulation. With glowing reviews, convenient set up and premium comfort, you cant go wrong!