A heavyweight option for colder months or climates, we've handpicked this duvet insert for its quality and versatility. Heavy-weight, all-season duvet insert features baffle block construction for maximum loft and minimum shifting of the down. Premium snow-white domestic down is encased in a 230-thread-count cambric cotton shell that's down- and feather-proof, preshrunk, and finished with corner anchor bands and cotton cording. Down alternative duvet inserts are also available.100% cambric cotton shell (230-thread-count). 600 to 615 fill-power. Superior quality snow-white domestic down, -57 oz. Baffle box construction. Sized to fit our duvet covers. Machine wash in warm water, like colors, no bleach. Tumble dry, medium heat until thoroughly dry. For best results, professional laundering is recommended. Do not dry clean. Made in USA of Imported Materials.