Millbrook mattresses are traditionally upholstered using only the finest natural fillings, such as British wool, silk, pashmina, cashmere and cotton in the mattresses, they create a mattress which is truly sumptuous and luxurious. The pocket spring is at the heart of all Millbrook's top quality sprung beds, each spring is placed into its own individual pocket and sewn all around to isolate it from its neighbours, ensuring no ‘roll-together’. Double stacking and individually hand nested pocket springs provide superior levels of support. The top tier if the springs absorbs the majority of the weight whilst conforming to the body shape. The bottom rows resist more gently adding to the overall support and also to the longevity of the mattress, all working in harmony to ensure that your body is supported. The unique Zonal edge springing provides extra strength to the sides of the mattress, by applying 2 rows of firmer springs on either side, ensuring no ‘roll-off’ or sleep disturbance. Every mattress in the range features traditional hand-side stitching which secures the outer springs to the border at top and bottom preventing ‘roll-out’ and is the most highly skilled and labour intensive of all our operations. Side-stitching is carried out by senior upholsterers using traditional long needles and twine to make borders and edges stronger. The effects on the mattress are quite dramatic preventing the springs from distorting and extending the sleeping area right up to the edge of the bed.