I had never heard of 1800 thread count sheets so I had to buy them. Great price too. I immediately put them on my bed and they are the softest sheets that I've ever had, absolutely wonderful.  The only issue was with the product description.  It stated "chevron 1800 thread count sheet set -navy",  but the only navy color on the sheet set was a small edge on the pillow case, otherwise, it was completely white.