OUR DUVET COVER IS BACKED BY THE GOOD HOUSEKEEPING SEAL: Experience everyday comfort with our 400 thread count 100% cotton sateen duvet cover sets king size bed. It helps protect your duvet from spills and stains to maintain freshness. . Experience comfort, convenience, and style with our 3-piece king size cotton duvet cover & sham set. Independently tested to earn the prestigious Good Housekeeping Seal. Our product also won the GH Best Bedding award in 2025. WHAT'S IN A SET AND WILL IT FIT ? Sizes for comforters or duvet inserts are not standardized, so we recommend measuring your comforter before buying their duvet covers king size. Our 3 Piece duvet cover king size set fits many comforters, as the duvet cover measures 106" wide x 90" long. And the 2 pillow shams in the set measure 21" x 37", to fit king size pillows. Made from the same 400 thread count fabric as our sheet sets and pillowcases for a coordinated look (each sold separately). EASY TO WASH & USE: Safeguard your duvet insert or comforter without washing it entirely. Our cotton king duvet set (comforter not included) is machine washable and can be tumble dried at home. The cover features button openings and internal ties for added convenience. Every item bearing the OEKO-TEX STANDARD 100 label is certified as having passed safety tests for harmful substances. THE LOOK: Imagine your bed looking beautifully styled with our duvet cover set king size. Our cotton sateen fabric has a beautiful sheen and helps reduce wrinkles for a crisp and elegant look. Complete the set with matching bed sheets available in the same fabric and color. OUR COMMITMENT: We prioritize comfort, community, and sustainability. Since 2022, we've donated over 56,000 bedding items to US charities and removed plastic from our packaging. Sheets are crafted in our family‑owned factory in India with care and quality‑checked—thread count may vary by ±5% due to standard manufacturing limits. Thoughtfully crafted for everyday comfort. Discover premium quality, soft, and silky duvet cover sets made from breathable, luxurious 400-thread-count 100% cotton. Slip a gorgeous all-season duvet cover over your current comforter or duvet for an instant bedroom makeover, or rotate two covers to reflect the season or your mood. You'll enjoy the smooth, luxurious feel of a silk or sateen duvet with the breathability and effortless care of high-quality cotton. Each complete set features matching pillow shams and handy internal ties to keep the cover in place over your comforter, eliminating slippage and bunched-up bedding. Our premium bedding is crafted with care using high-quality fabric and a clean, simple design. Each of our 100% cotton duvet covers is crafted using long staple cotton, combed to filter out impurities and help give superb strength. If you love duvet covers or organic cotton duvet covers, you’ll adore these premium sets. They're made of natural cotton fibers and crafted using ethical and green processes. Each piece of bedding is made in a state of the art factory and inspected by hand for a quality check. Whether your style is a classic stripe or a bold solid duvet cover to add a pop of color, this premium duvet cover set is the centerpiece for guest rooms, master bedrooms, lofts, apartments, and beyond.