This 550 fill power overlay is insulated with luxurious white down that fills 550 cubic inches of loft--20% more than typical overlays, resulting in superior loft, heat retention, and softness. The down is harvested from large white down clusters, ensuring maximum thermal efficiency and the fullest expansion of the filling material, yet the overlay is slim enough for use under a fitted sheet. The 400 thread count cotton shell prevents feathers from poking through and provides a silky-smooth, breathable surface. Its diamond-quilted top holds the fill in place as the overlay forms to your body, ensuring a flawless sleep surface. The 18" skirt has an elastic band that secures the overlay to a mattress. Machine washable. Imported. King. 80 " L x 78" W x 2" H. (12 lbs.)