Ultrawashable 10.5 tog microfibre polyester double duvet provides superb softness, warmth & lightness wash after wash. With a 100% cotton percale cover, it can be repeatedly washed at 60° in a domestic washing machine, the temperature that kills dust mites (ideal for anyone with dust or feather allergies). 10.5 Tog is the perfect warmth for Autumn & Spring, or during the winter months for those with warmer houses.