Surrey Down Duck Feather and Down duvet is 90% Duck feather and 10% Duck Down combined to make a sumptuous bedding option for any bed in your home. White cotton cambric weave shell makes this a breathable and comfortable duvet. All Surrey Down products are NOMITE 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, giving you the assurance that there are no harmful chemicals or substances in Surrey Down duvets and pillows. Class 1 certification means that they are suitable for babies and children.