DMG 2774 Hypnos Princess Split Tension Divan Set. The Princess is a split tension mattress from Hypnos, meaning half has a firm tension while the other half is regular. This fantastic mattress contains over 1600 ReActive pocket springs in the king size model. Pocket springs react to the contours of the body as they work individually from one another unlike a cage unit where they work as one. This provides excellent support. The Princess also contains sumptuous layers of natural fillings such as cotton, lambs wool, cashmere and silk, all providing superb comfort. This Hypnos mattress is hypo allergenic, ideal for any allergy sufferers. The three rows of hand side stitching also provide support even at the edge of the mattress. And buy this DMG 2774 Hypnos Princess Split Tension Divan Set (Regular/firm) Now £849.00.