100% Cotton 【Martha Stewart is the founder of Martha Stewart Living Omnimedia】an entrepreneur, a bestselling author of 98 lifestyle books, and an Emmy-winning TV host. Her multi-channel lifestyle brand reaches 100 million+ devoted fans monthly via magazines, shows, books, and home products, covering cooking, gardening, home care and more 【Premium Goose Feather & Down Fiber】filled with a plush blend of 90% white goose feather fiber and 10% white goose down fiber. hypoallergenic, meeting OEKO-TEX Certification standards for purity and freshness. Wrapped in a soft, breathable 100% cotton shell, every night feels like a five-star hotel retreat. 【Versatile Sizing & Warmth Options for Every Season】Choose from three sizes (Twin 68"x90", Queen 90"x90", King 106"x90") and three warmth levels to suit your needs: Light Warmth for hot sleepers, All Season Medium Warmth for year-round comfort, and Extra Warmth for cold winter nights. 【Exceptional Craftsmanship for Long-Lasting Luxury】Sewn-Through Box ConstructionOur comforter is built to last with precision end-to-end sewn-through box stitching. This innovative design locks the down fill in place, eliminating clumping and ensuring uniform loft across the entire surface. No more cold spots or lumpy bedding even after years of use. 【Unpacking & Initial Fluffing】Your Martha Stewart comforter arrives vacuum-sealed for protection. Simply unbox, gently pat and shake the insert, then allow 72 hours for it to fully expand to its original lofty shape. For faster results: toss it in a dryer on low heat or air-dry mode for 15 minutes.Long-Term CareTo maintain its plushness and hypoallergenic properties, we recommend professional dry cleaning only.