The Sateen Organic Cotton Duvet Cover Set + Shams is a smooth organic cotton duvet cover set designed to protect and style a comforter or duvet insert. The sateen weave provides a softer drape and smoother feel than crisp cotton percale. Materials and construction Organic cotton fabric. Sateen weave for a smooth hand feel and subtle sheen. Duvet cover construction for use with a compatible insert or comforter. Coordinating sham or shams included depending on selected size. Certifications and origin Organic cotton certification details should be confirmed on the live product page and product label. Vendor or maker is listed as NB IF in Shopify product data. What's included in the set Duvet cover plus coordinating sham or shams depending on selected size. Confirm exact contents on the live product page. Dimensions and fit Choose the duvet cover size that matches the duvet insert or comforter. Use ties, buttons, or closures as directed if included. Care instructions Follow the product care label. Wash with similar colors. Close buttons or closures before laundering if present. Dry according to label instructions to preserve cotton softness, fit, and color. Best uses Organic cotton top-of-bed bedding. Protecting a duvet insert or comforter. Bedrooms using coordinated organic cotton sheets and pillowcases. Sleepers who prefer smooth sateen cotton.