Willow and Eve Saint Pierre Mattress - 6ft Super King Size; Generously filled with hypo-allergenic fillings, the Saint Pierre mattress features a robust open coil spring system and a luxurious stretch knit fabric. A traditional hand tufted finish is applied to the mattress by passing tapes through the mattress at regular intervals to keep the fillings in place. The interior consists of hourglass shaped springs, set out in rows running from head to toe and connected to each other by a series of spiral wires. To prevent border breakdown and provide edge to edge support across its width, a thick rod-edge wire is attached to the perimeter rows of springs. As its a dual sided mattress, it requires to be rotated and flipped over on a regular basis to enhance its support, comfort and lifespan.