From Peacock Alley, the Silk-Filled Duvet Insert features: Experience the ultimate in luxury and comfort with our Silk-Filled Duvet Insert. Made with 100% long strand mulberry silk, this duvet provides superior softness and insulation while also being breathable. The silk filling offers exceptional temperature regulation, keeping you warm in the winter and cool in the summer, while the cotton shell provides a soft and smooth texture against your skin Filled with 100% long strand mulberry silk floss fill Outer shell is 100% cotton Queen approx. 90" x 90" King approx. 108" x 90"  With its natural hypoallergenic properties, this duvet insert is perfect for those with sensitive skin or allergies Dry clean only Imported.   Every few months, to help keep moisture down and the fluffing up, toss your silk duvet into a front-loading dryer set on air or low. We recommend periodic laundering by a professional to maintain optimal fluff.