The Coniston Natural mattress features a 2200 double layer of pocket springs and is packed with natural fillings as well as having the added benefit of a firm perimeter support which means you can use your mattress right to the edge and still get the ultimate support you need for the best night’s sleep possible. Mattress Tension: Medium - 2200 pocket springs - The pocket spring system is the best at providing individual support to the sleeper. The upper part of the spring shapes to the body contours while the lower part absorbs changes in weight distribution for the ultimate in comfort and support. Photograph is for illustration purposes only. Priced in a Range A fabric.