I have a very deep mattress and it’s  hard to get sheets that stay on my bed.  The sheets fit very well snd stay on with no problem.  At first I was very pleased with the sheets, however after washing them only the second time the fitted sheet started to pill.  The pilling has gotten worse the longer I use them.  I ordered two sets of sheets and have considered returning the second set, but I don’t have the paperwork.  For the original price, you would think these sheets would not pill like this.