Serta 233 Thread Count White Goose Feather and White Goose Down Fiber Comforter (King). Sleep comfortably year-round under this Serta all season warmth comforter. The 90% white goose feather fiber and 10% white goose down fiber fill provides an all season level of warmth, and the box stitching maintains an even distribution. With its classic white cotton cover and self-piping edges, this comforter looks elegant alone or in a duvet cover. All season warmth comforter White goose feather fiber and white goose down fiber comforter 100% Cotton cover 233 Thread count End-to-end stitching Solid white color Self-piping edges Dry clean only FreshLOFT process ensures that the feather/down material is clean of dust, dirt, and allergens 90-percent white goose feather fiber, 10-percent white goose down fiber Certified by the American Down and Feather Council Made in China Twin: 68 inches wide x 90 inches long (48 ounces of fill) Full/Queen: 90 inches wide x 90 inches long (64 ounces of fill) King: 106 inches wide x 90 inches long (75 ounces of fill) Down and feather-filled products are packed tightly during shipping. Upon receipt, remove them from their packaging, fluff gently, and allow several hours to recover their full loft. In addition, being sealed in plastic packaging sometimes causes the scent of these natural products to concentrate to a disagreeable level. A few hours of airing usually removes the odor.