The Divine Ortho Mattress uses a 12.5g Orthopaedic spring system to provide an extra firm support. The springs are kept in separate rows and are connected with helic wire. The orthopaedic sprung unit also has a metallic rod around it to provide edge to edge support so you don't roll off the side of the mattress. The mattress is finished with a quality Damask cover with generous modern and traditional fillings all held together securely with a hand tufted finish for the perfect nights sleep.