The Surrey Down white goose feather and down duvet with 85% goose feather and 15% goose down fillings, will provide the extra class to whichever size bed you wish and the cotton cambric cover enhances comfort. All Surrey Down products are NOMINATE certified. This is issued by the EDFA and means that the fabric is so tightly woven that house dust mites cannot penetrate the fabric, making them suitable for sufferers of house dust mite allergies. All products also conform to the Oeko-Tex 100 Class 1 standard. This assures you that there are no harmful chemicals or substances in Surrey Down duvets and pillows. Class 1 certification also means that they are suitable for babies and children.