Really surprised no one has mentioned in their reviews only the top is 500tc and the reverse is 300tc so the quality is not as it should be making it difficult to iron.  Buttons badly sewed loose threads everywhere and yes a mark for each button hole.  Plus points however duck egg blue is beautiful colour and tones in beautifully with my curtains and other pillows. I am happy with end result but took over an hour to iron. My advise put a flat sheet under to avoid having to wash too often.