Pure Eiderdown Comforter - Egyptian Cotton Fabric by St. Geneve, CalKing-Winter 65oz Contact us for availability and pricing. Prices NOT guaranteed and subject to change without notice 360 Thread Count Egyptian Cotton. Piped in White Satin Cording 700 Fill Power Down. Equivalent to 850-900 Fill Power in insulation value Guaranteed Hypoallergenic 20 Year Manufacturer's Warranty. User Tip: Always use the Eiderdown comforter inside a duvet cover