The Surrey Down White Goose Down Duvet has 80% goose down and 20% goose feather filling making this duvet light but with excellent insulating capabilities. The 100% cotton 233TC cambric cover is fully breathable and the range of sizes available ensure this luxurious duvet is suitable for all bed sizes. 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. This gives you the assurance 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.