Mattress: Treat yourself to a Windsor 4000 pocket sprung mattress. Sizes: Option of single, double or king. Layers: Filled with layers of hypo-allergenic fillings to work in unison with the silver fibre. Support: Features medium strength springs and includes surround edge strength support. Silver fibre: Maintains its properties and hygienic structure even at low temperatures. Advantages: Antibacterial, hygienic, odour reduction and eco-friendly.