Queen size fits 60" x 80" mattresses 550+ fill power with a 100% fine cotton shell with a thread count of 400 4 Season weight is ideal for moderate climates and homes, or for those that find a summer weight duvet is too light Mature bird feather clusters are larger and have a higher fill power, producing more air pockets to increase both breathability and insulation Baffle box construction enables more evenly distributed fill and eliminates cold spots associated with down shifting 4-way baffle box construction and double stitching with white piping ensures long-lasting durability and comfort Hypoallergenic treatment using anti-microbial preparations deters bacteria trapping Downmark label ensures product meets requirements of the Down Association of Canada Made in Canada Dry clean only