Very disappointed. I should have known that the price is too good to be 400 thread count, 100% cotton, let alone Egyptian cotton! As soon as I touched it, I noticed it felt like polyester. I took a few loose threads and burned them. The residue smeared like burnt plastic or wax. As a control, I also burned loose threads from my 100% cotton pillow cases and that burned cleanly into ash the way that natural fibers should.