DMG 5770 Hypnos Duchess Split Tension. This 4'6 Hypnos Duchess Split Tension (Regular/Soft) mattress is an ex-display model from one of our stores.This item may have some marks from shop use.This is why it is available at this cheaper price. Make sure you grab a bargain today! Please note that this mattress has been laid on but not slept on!! Luxury lambs wool, silk and cashmere fillings. Hand tufting holds these fibres in their place whilst providing additional soft comfort. Support comes from 1400 ReActive pocket springs which, like all Hypnos mattresses, have been double tempered for long lasting robustness. Rows of hand side-stitching give strong perimeter support, eliminating the problem of side-sag. Hypoallergenic border. And get this DMG 5770 Hypnos Duchess Split Tension (Regular/Soft) Was £799.00 Now £599.00.