Genuine Eiderdown Eiderdown is the softest down in existence. This pillow is suitable for those desiring a very soft and responsive pillow. Eiderdown should not be washed too often, so always use a good quality pillow protector.DOWN SPECIFICATIONS 700+ Loft Down Canadian Eiderdown Zurguard Certified Hypoallergenic COVER SPECIFICATIONS 300 Thread Count / SoLoft™ 100% Cotton Sateen Cover Includes a 100% Silk Jacquard Protector Fabric woven in Germany Oeko-tex Standard 100 – Class 1700+ LOFT Zurguard Certified to be Hypo-Allergenic Eiderdown is the softest and highest insulating down in the world. It is lighter in weight, warmer in the winter, cooler in the summer and is unsurpassed for comfort throughout the seasons. It’s insulating capacity is so advanced that it adjusts to the temperature of the person under the duvet. Our eiderdown is hand collected from the bird’s nests at Canadian Eider Duck sanctuaries. For generations, the local farmers have created a bond between themselves and the Eiders, where the birds aren’t disturbed and they trust the down collectors implicitly. While eiderdown tests at 700 loft, it’s unique high density and cling make it insulate at a much higher rate. We find it takes less weight of Eiderdown than any other down to get the same warmth. It is more efficient than a 1000 loft down.