A DreamGuard duvet encasing used along with a mattress encasing and pillow protectors is recommended for anyone with a dust mite allergy. This will ensure the most effective possible barrier against dust mite allergens in the sleep zone. DreamGuard duvet encasings are available in a range of sizes (Super King, King, Queen, Double, Three-Quarter and Single) to fit most duvets. The encasing is easy to put on: the duvet goes into it just as it would into a ordinary duvet cover , then it zips up securely along one side with a fine-tooth durable acrylic zip. Your usual duvet cover goes on easily over the top of it. As with all DreamGuard products, the duvet encasing is made from our unique laminated textile which is exceptionally soft and pliable, totally breathable yet impermeable even to microscopic particles including the dust mite secretions which are the cause of dust mite allergies. Being fluid-proof too, a DreamGuard duvet encasing will protect your duvet from staining caused by any accidental spills. Wash at max 60 degree Celsius with a dry cycle at 40 degrees to support the longevity of your DreamGuard mattress encasing.