Down Comforters will help keep heating costs low and keep you cozy warm at the same time. 12" Sewn Thru Boxstitch, 100% Snow White Down Comforters, 230 Thread Count, Cambric Cotton 575 cu. in. Fill Power Oversized boxes are generously filled. Allows for maximum loft of fill. Eliminates any movement of down. Edges are double stitched with cotton cording. Manufacturer 15 year warranty.