| Eider & Ivory™ Goose Feathers Down Duvet Insert King Size Down/100% Cotton/Goose Down in White | 90 ... Filled with just the right amount of luxurious 750 fill-power feathers and down, can provide all you want for a down duvet: soft, fluffy, warm, lightweight, breathable, and noiseless. It's worth using duvets than alternative comforters ... more | Wayfair | $509.99 $449.99 FREE shipping go to store |