HIGH-QUALITY CRAFTSMANSHIP & DESIGN -The breathable duvet insert has 300TC cotton shell filled with 100% top grade silk. Zipper closure 400TC cotton sateen removable duvet cover is sewn with 8 corner tabs to secure duvet cover in place. Set of 2 stunning pillowcases with zipper closure.EASY CARE & DURABLE - The cotton sateen comforter cover and pillowcases can be machine washed. The silk comforter insert cannot be machine washed but need to be aired every few months on the line or balcony out of direct sunlight. Spot clean only in the event of a spillage or stain.