Firmness: This mattress has a medium firmness so it is perfect for any body types and for people who like to sleep on their side, front, and back Open Sprung Mattresses: Features 13.5 open coil bonnell springs, that provide even support for all of your body's pressure points. Also has a four way stretch fabric and is deeply micro quilted for extra comfort. Memory Foam Mattresses: Get an open sprung quilted memory foam mattress. Options: Choose between six different size options, each mattress is also suitable for any standard sized bed base (see full details for dimensions). Mattress Depth: fifteen centimetres deep with responsive 40kg/m3 memory foam that contours to your body's natural shape. Hypoallergenic Mattresses: This mattress Is hypoallergenic so is highly suitable for any allergy sufferers. Open Sprung Quilted Memory Foam Mattress | Living Social