From the Cortina collection. Encased in cotton sateen, our Cortina duvet is filled with naturally light and extremely soft Polish goose down - excellent at springing back into shape and retaining its enduring fluffiness. Duvets available in Light, Medium, and Warm (Heavy) weights. Goose down fillers feature baffle box construction, finished with a double-stitch seam, grey decorative piping, and corner silk listing style and weight.