This Premium Luxury duvet with our light silky soft hollowfibre filling coupled with a 100% cotton cover gives you supreme comfort. The 10.5 tog rating means it is suitable for all year round use and is perfectly suited to todays modern homes. Truly an experience thatgives you a silky soft touch with the pure properties of cotton. Superking duvet. 10.5 tog duvet. 100% polyester filling. 100% cotton cover. Percale 180 thread count. Machine washable at 40C. Suitable for tumble drying. Non-allergenic.