I'm very happy with this duvet set. The top part is linen, the underside of both duvet cover and pillow covers is a cotton, like a bedsheet, which I think keeps the cost reasonable.  I machine washed it, put in the dryer, but removed it from the dryer as soon as it was dry so it did not crease. I put it immediately on the bed without ironing. I like that wrinkly natural linen look. It fits the duvet and pillows well.