Enjoy an ultimate night sleep with this premium down comforter from Martha Stewart, featuring a soft, breathable 300 thread count down proof cotton cover, filled with hypoallergenic premium down to offer you the year round comfort• 300 thread count, breathable, down proof cotton cover• Hypoallergenic, Premium White Down fill• 600 Fill Power• End to end sewn through box quilting keeps the fill from shifting• Corner loops included to tie the duvet cover• FreshLOFT® process ensures that the feather/down material is clean of dust, dirt and allergens• Products certified to the Responsible Down Standard (RDS) contain down or feathers from farms certified to animal welfare requirements