Silky-Soft & Breathable - Wrapped up in a 1200TC SQ DM long-staple cotton-blend case with a pre-washed and double-brushed finish, our duvet insert king is incredibly soft, breathable, and moisture-wicking for a refreshing morning,Cloud-Like Fluffy - We've filled this luxury king size duvet insert with high bulkiness ethically sourced white feather and down fibers to make it blissfully soft, lightweight, lofty, and highly insulating.,Without Clumping or Cold Spots - Our hotel collection king feather down fibers comforter features a 3D-Room box construction, ensuring even distribution of fill to warm you from head to toe. 4 corner tabs are easy to attach to your favorite cover. The double-stitched edges add durability for long-lasting use.,Ethical Production - Hand-selected, up to 36 washing and sorting processes make our feather down fibers duvet insert highly clean, free of odors and hard quills, and cruelty-free for allergy sufferers. Approved by OEKO-Tex, RDS, SEDEX, etc.,Year-Round Comfort - Our all-seasons feather down fibers comforter achieves the perfect balance of comfort, warmth, and fill-weight to ensure a thermoregulatory sleep space that does not overheat or sweat, perfect for most sleepers year-round use --Whether on cool spring and summer evenings or chilly fall and winter nights.