The Imaginarium 10 hybrid of memory foam and coils is a four-layer mattress featuring premium memory foam for comfort and pressure relief that transitions into high density foam for support. These foams are then paired with individually wrapped coils that help minimize motion transfer. Our coils are encased in an edge support foam for greater support around the perimeter. The combination of these foams and the individually wrapped coils makes for the perfect blend of comfort and support. In addition there is a final high density base layer for added stability to ensure that our mattress is an industry game-changer. Perfect night s sleep for kids teens and adults.