What a disappointment!  When I opened the package I saw that the fitted sheet had a continuous seam with elastic all the way around it, rather than having elastic on the corners.  It looked like it was a cheap way to make it.  However, I needed the sheets, so I went ahead and washed according to instructions.  When I put the fitted sheet on the bed for the first time the elastic broke!  I am not returning them because I can make do, but I would never buy this set again.  Also, the depth of the fitted sheet is not as advertised.  It says it will fit 15-18".  My mattress is only 7-8" deep and I barely got it on the mattress.