This is not a plain weave/muslin; it is sateen. The packaging and website say different things. I am very disappointed because I did not get what I specifically had sought out but now Wayfair expects me to pay for the item’s return — even though it was their error! Terrible customer service. Do not buy this item unless you want to actually receive sateen sheets. Plus they barely fit over our mattress and the pillow cases are very tight and hard to get onto out pillows. Never again. Awful misrepresentation of an inadequate product. Shame on you, Wayfair!