Item: Washable Silk Duvet Beautifully soft and warm, this washable mulberry silk-filled duvet is the ultimate in bedtime luxury. Filled with pure mulberry silk that has been created by silkworms that mainly feed on the leaves of mulberry bushes, it is naturally breathable and hypoallergenic with a fine and compact finish. The super-soft 400 thread count cotton sateen cover that helps to regulate your body temperature as you sleep, it is ideal for allergy suffers. Shell fabric: 100% cotton, 400TC Size: Single 135 x 200cm Double 200 x 200cm King 225 x 220cm Super King 260 x 220cm Size  (in inche) Twin:67"x87" Full:76"x87" Queen: 87"x90" King:104"x92" Filling: 100% Washable Long mulberry silk Filing weight and Season:  150gsm/Summer     350gsm/ All Year   Certification: Oeko Textile Standard 100 Edge: Light Blue Piping Quilting Pattern: 3cm small circle Washing Instructions: Machine washable at 30°C