Duvet covers, fitted and flat sheet, pillow cases. I can't believe it's not silk or something similar, is what it should say on the label of this bed linen! I can't believe it's not silk' or something similar, is what it should say on the label of this bed linen! All the wholesomeness of undyed, organic cotton with the most delicious, decadent feel. Slippery smooth, undyed, unbleached organic cotton satin weave with a very high thread count (290) and a warm golden sheen.