Soft, even comfort meets a more considered approach to materials in the Down Alternative Duvet Insert. Its GRS-certified microfiber polyester fill incorporates verified recycled content while providing the plush, consistent loft of a down alternative. Baffle box construction creates individual chambers that help keep the fill evenly distributed for dependable warmth and loft throughout the night. A 330 thread count cotton sateen shell offers a smooth, quiet surface beneath a duvet cover, while double-stitched edges with braided piping provide a polished finish and added durability. Corner loops secure the insert to a duvet cover, helping keep everything comfortably in place as you sleep.