Slatted frame Balance 300 FIX 120x200 gives your mattress the balance of a finely tuned orchestra, each of the 42 springy slats responds precisely to body impulses, while the 7 sensitively graduated comfort zones bed the back as if in a boutique suite; the individual firmness adjustment in the middle allows a personal touch, and the internal centre belt harmonises everything into a quiet symphony of the night.Multi-layer spring slats made from sustainable beech woodInfinitely adjustable firmness level in the centre zone using a sliderInternal duo caps minimise noise when movingSlim design fits unobtrusively into modern bed frames