The size of this duvet cover is exactly as advertised and fit my down comforter perfectly. It is important to wash the duvet on delecate cycle and dry on low heat setting. Remove promptly from dryer and you will have few to no wrinkles. My single critique is that only one of the corner ties is properly stiched in the corner of the duvet. The other three corner ties vary from 2 to 3 inches from the corners. It looks like a quality control issue; there are 6 ties in total. The zipper is perfect and correctly placed at the foot of the comforter. With the exception of the position of the ties, I'm am very pleased with my purchase!