100% Polyester Comforter Duvet Insert: King comforter duvet insert measures 90 inches x 102 inches Box Style Stitching: Crisp looking comforter with siliconized fiber filling features piped edges with an elegant style box stitching that prevent the fill from shifting Siliconized Fiberfill: Extremely soft material with siliconized fiberfill alternative filling provides a comfy and cozy feel Corner Tabs: The four corner tabs make it extremely easy to put on any duvet cover and secures the comforter in place Machine Washable: Machine wash in the gentle cycle with cold water, line dry or tumble dry no heat Luxury Down Alternative Comforter Duvet Insert! The Down Alternative Comforter Duvet Insert delivers optimal comfort, quality, and value. Quilted stitch construction prevents shifting and helps retain shape. Box stitch construction Soft luxury bedding Easy care material that lasts Elegant tailoring and quilted stitching help the comforter to retain shape over time. Machine wash, Do not bleach, Tumble dry no heat, Do not Iron, Do not dry Clean. Vacuum packed; Takes up to 24 hours to fluff up