Perfectly suitable for those who are in search of a mattress that provides extra back support, the Pureflex Sprung Ortho Memory Mattress is manufactured of generous memory foam sleep surface on top of the 12.5g bonnell spring unit. For a peaceful night sleep, this incredibly stylish mattress conforms to the body’s natural shape, relieving all the critical parts of the body that are prone to pressure and contributes in appropriate spinal alignment.