Very well made, but not 100% down, an absolute must in a top quality comforter. This is a specification that should be revealed in all descriptions, but not at Overstock. This is 75% down, 25% feathers, which means with feathers at 2-3 times the weight of down clusters, there is equal or more volume of feathers to down in this model. This explains the mediocre loft and heavy feel... it feels more like a conventional quilt but warmer. A comforter of true 50-60 oz. of 100% down cluster weight and 650 fill power will be very light and have 3-4 inches of loft immediately the first week, and more with time. It will breathe well, making it ideal for winter and summer use regardless of loft height. Feathers do not have this quality and generate the odor, since they are closer to the body than the down cluster and carry the body oil of the bird. If you want a good loft and the lightness that makes a down comforter heavenly, this and others here I've tried are not the ones. Also, the fabric is heavy and stiff, not supple and gossamer, again unlike top quality. 400-600 is plenty of thread count to hold down and remain luxurious. This one's a bit scratchy, and will take years of use and cleaning to make soft. Baffle boxes over 10 inches are large, and down will shift in each some each night, creating hot and cold spots. True boxes are sealed; this and most others leave a channel between boxes that allows down to shift over time, requiring you move it by hand to even it out. Once you've experienced top quality, you won't settle for less regardless of price. Still shopping.