It was shown as microfiber which I have ordered in the past and they are soft and almost like cotton but warm. This new set I received is more like silk, the top sheet shines and is slick. The bottom fitted sheet is not as stretchy as microfiber. The set was okay but not what was advertised. The cost was so good I did not have the heart to return it and it does work but with a different mindset. When I felt the material I automatically thought of bait and switch.