The Purcell is a mattress packed full of great features and components at an unbelievable price. It all starts with a special tri-zoned pocketed coil innerspring. These fabric wrapped coils are designed to be very conforming and stable to help shape to our bodies and minimize motion transfer. The center third of the Purcell has gel infused memory foam which helps add additional support to the lumbar area. All of this combined with super soft foam layers and a luxurious cooling knit cover makes for one great mattress at an incredible price.