From Peacock Alley, this duvet insert features: Not all sleep is created equal. Not all down is created equal, either. Every Peacock Alley down duvet offers you the finest European white goose down fill that is responsibly sourced, sterilized using the Ultra15 Clean process, then wrapped in a 400 thread count cotton sateen down proofed cover that feels incredible.  650 fill power Shell is made of 400 thread count cotton sateen sheeting Responsible down standard certified Made in China of European White Goose Down All of our Down products feature down that is responsibly sourced and meet or exceed an ultra-clean rating Twin/Twin Extra-Long approx.  68" x 90"; year round weight - 20 oz. Full/Queen approx. 90" x 90"; year round weight - 30 oz. King/California King approx. 105" x 90"; year round weight - 35 oz. Keep your down duvet fluffy Every few months, to help keep moisture down and the fluffing up, toss your down duvet into a front-loading dryer set on air or low. We recommend periodic laundering by a professional to maintain optimal fluff. Professionally launder or machine wash cold in a large capacity or commercial washer. Dry on low heat. Imported.