I purchased two sets of these sheets, one full set in the gray and a queen set in the light gray.  After the first washing both sets had fraying on some of the corner seams and all seams frayed after the second wash so I had to sew each corner seam.  The fitted sheet from the queen set has pilled so I am unable to use it and also there is pilling on the pillow cases. (See photo)  I purchased these sets based on reviews and that they were 100% cotton, however I am very dissatisfied with them