Envelop yourself in the unparalleled softness and warmth of our Down Duvet Insert. Our traditional duvet insert is filled with down that is ethically sourced and Responsible Down Standard certified. The 650 fill-power down is encased in a 400-thread-count cotton shell with baffle box construction that keeps the fill evenly distributed for no-fuss warmth all night long. Choose from our lightweight or all-season options to achieve your perfect sleep temperature. Pairs with our .