Boyd Specially Sleep, Flotation Brighton Shallow Fill mattress, features micro-fiber tack and jump quilted plush cover. A Fluid Suspension Mattress utilizes water as its advanced source of contouring support instead of traditional innerspring support. In a BOYD FLOTATION® Fluid Suspension mattress, the metal springs are replaced with Fluid that give total support and conform to your individual body type. The advanced fluid suspension design perfectly supports every contour of your body. It is designed to eliminate those annoying pressure points that cause tossing and turning and prevent you from getting the deep, restful night's sleep you need.