These sheets are stunning for 400 thread count! The fitted sheet has a great stretch and the corners are sewn so beautifully! I loved that part about the sheets a lot! I also loved how the tag on the inside of the fitted sheet tells your if it is the front (head/feet) so you aren’t wasting time flipping the sheet over and over! The flat sheet is perfect and I felt it was wider than the normal sheets that I buy. The stitching is pretty and makes the sheets have a more luxury feel! The pillow cases fit a standard pillow and are amazing. 
The reason for the 4-star review is they are heavy! I live in Florida so heavy sheets are no fun! I thought for a 400 count sheet set it would be thinner! Not a bad thing at all for those who need thicker sheets!