YEMYHOM Removable Duvet Covers for Weighted Blankets Inner Layer is made of 100% polyester, high quality minky fabric with fine workmanship and details-oriented. It is simple and fashionable with your decoration, environment friendly, soft and comfortable. The unique design has 8 ties in the 4 corners in the duvet cover (ties are made of polyester) for connecting with weighted blanket's corner, making it easily removable or insertable and keeping them in place. It has fine stitches and exquisite sewing techniques, with a round and full zipper for easy pulling and durability. It is available in 48inches*72inches, 60inches*80inches, 36inches*48inches, 40inches*60inches sizes and gray and blue colors. It is machine-washable on gentle program cold water and helps protect your blanket from dust, stains and any other damages.