The White Goose Feather and Down Duvet contains a blend of feather and down, this makes it softer than a traditional feather duvet. Because this duvet contains both feather and down, it is lighter than a feather duvet, but heavier than a down duvet. The 100% down-proof cotton allows the fill to breathe while preventing leakage, and the 260-thread count provides optimal durability and a crisp, starchy feel. Contains RDS Certified Down: The goal of the Responsible Down Standard is to ensure the waterfowl in the down supply chain are treated humanely.