100% cotton sateen filled with hypoallergenic Comforel fiber Made in USA Machine wash cold with like colors. Tumble dry low. ****reiteration: This has NO down/feathers in it- synthetic material, no feathers. Item is in great condition and washable. “Handcrafted in Brooklyn, our Inserts are designed to fit and fill all HHH duvet covers. Each insert features corner duvet cover loops, ensuring a secure fit. Made from hypoallergenic down alternative, they’re guaranteed to feel soft, breathe easily and look great.”