These sheets are the same 100% cotton and 400 thread count that I normally purchase, only these were a whole lot less! I did wash them before putting them on the bed, and they end up looking pretty wrinkled when you first take them out of the dryer, but they smooth out nice once on the bed. I did iron the pillowcases. I usually do that anyways with pillowcases. This was a great sale find, thank-you Wayfair!