The Fusion Luxe is one of our most popular and best-selling mattresses. It has a medium-plush feel that actively adapts to the contours of every individual, providing pressure relief to side sleepers. The Cooling Knit Fabric Cover and Gel AeroFusion Memory Foam layer promote airflow and a cooler sleep all night. Medium-plush Hybrid with memory foam + individual pocket springs Gel AeroFusion™ memory foam, adaptive foam, and flex comfort foam core