Designed to work with a duvet cover if you want with 4 corner loops for attachment. Or, skip the duvet cover and use by itself with it's crisp white fabric. Medium weight comforter great for year-round comfort. Features premium 550 fill power white duck down. 230 Thread Count 100% Cotton Fabric 550 Fill Power White Duck Down 14 Inch Quilted End-To-End Sewn-Thru Box Construction Duvet Loops for Duvets with Ties Double Needle Edge Sewn with Matching Piping Easy Care: Machine Washable and Dryable Bulk Packed in Protective Polyester Outer Bag RestAssured Hypoallergenic Filling Processed in the USA Shell Made in China. Filled and Finished in the USA of Imported MaterialsSize & Weights: Twin XL – 66 x 90 Inches, 23 oz. Fill Full/Double – 82 x 90 Inches, 27 oz. Fill Queen – 90 x 90 Inches, 31 oz. Fill King – 104 x 90 Inches, 35 oz. Fill