Others have said these wrinkle a lot.  Well, they're 100% cotton.  Remember, that's why they started making no-iron sheets with other fibers....  These are very, very nice sheets for the price.  They are a little thinner than I would have expected (thus only four stars), but still feel extremely luxurious, wrinkle a lot less than I would have expected, and fit what they say they fit:  deep mattresses.  Very nice.