Our DWR Duvet Insert (2016) is manufactured to provide lightness, warmth, comfort, and luxury. A dense cotton shell with 10-by-10-inch quilting is neatly finished with knife-edge cording. For the down insert, workers meticulously select the fluffiest down clusters and straightest quills, which are then washed 12 times before insertion to a fill power of 550. The hypoallergenic down-alternative has polyester fiber fill: 45 ounces in the full/queen-size insert, 53 ounces in the king-size. Dry-clean only. Made in China.