This luxurious duvet is filled with natural long-strand silk fibers for all year comfort. It breathes to control humidity, body temperature, comfort and enables your body to maintain a more stable temperature. Shell is 100% cotton. The duvet is dust mite resistant and naturally hypoallergenic. Layering the silk during the manufacturing process creates an intricate grid design, which is key to the heat regulating function of the duvet. Because the silk floss has been layered and not stuffed into the duvet covering, the silk is able to let some heat escape through the grid design. This results in a more pleasant sleep because our body temperature is kept at a more constant temperature throughout the night. Silk has some amazing hypoallergenic properties. Silk is a natural protein and therefore is far less hospitable to dust mites, which can trigger allergic reactions such as asthma, eczema and rhinitis. Up to 20,000 dust mites have been known to live in a single mattress. The use of a silk filled duvet greatly reduces the amount of dust mites in the bedroom. The nature of long-strand silk fibers means a silk duvet is just as warm, but much lighter than traditional duvets, and drapes over your body instead of “suffocating” you with the bulk of a conventional duvet. Caring Instructions: This silk duvet is made of the finest quality long fiber silk, they are less susceptible to bacteria and the cleaning requirements are far less than a conventional duvet. All the care your duvet should need when used in conjunction with a duvet cover is to be aired in the sun about twice a year. To ensure long life and infrequent cleaning, you can maintain the duvet by spot cleaning if required. Do not wring or twist, do not bleach. Duvet must be washed in cold water on delicate cycle using detergents used for delicate fabrics and tumbled dry on low or line dry. Must dry completely. Must use commercial size washer or dryer. Air dry in a large size dryer on cool or line dry.