Sleep comfortably year-round under this Serta extra warmth comforter. The 90% white goose feather fiber and 10% white goose down fiber fill provides an extra 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.   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.