Year-Around Feather Down Fiber Comforter - This Hotel Grand duvet insert is filled with white goose feather fiber and white goose down fiber. The carefully selected high-quality white goose feather down fiber filling provides superior warmth, lightness, comfort and fluffy appearance. Our fillings are ADFC (American Down and Feather Council Certified) and OEKO-TEX certified, ensuring they are odorless, high cleanness and verified. Premium Material - The cover of the goose feather down fiber comforter is made of 100% cotton fabric. Its down-proof feature ensures that the filling inside the duvet does not leak. It is breathable, comfortable, and noiseless. You will enjoy a 5-star hotel sleep experience at room with our comforter! All Season Duvet Insert - Our feather and down fiber duvet features an end-to-end swen-through box design construction that ensures an even distribution of the filling for a consistent plush feel and shape retention. Sturdy & Exquisite Details - This goose feather down fiber duvet insert has 4 corner loops and 4 side tabs ensure it stays in the correct position with the duvet cover. All our comforters feature self-piping stitching to enhance durability and prevent the filling from leaking. Care Instruction - This Hotel Grand duvet insert comes vacuum-packed. Once you take it out from the package, please gently pat it and wait a few minutes for it to return its original loft before use. Recommend Dry Clean Only. We suggest using a duvet cover to maximize the lifespan of your duvet.