One of the best sellers in our lineup, this mattress uses the 390 Bonnell spring unit. The extra foam included in the quilting brings additional comfort. Cost effective, this mattress is a must have for your collection. Taking the familiar look and feel of the Plush, we decided to create a single-sided pillowtop version of the mattress. For the individual that enjoys the extra comfort. Adding the pillowtop has given this mattress a solid medium feel to it.