These are the ugliest stair treads I have ever seen. The design looks like it was printed on and will wear off in no time. The adhesive  on the back is no stronger than scotch tape.  It took more than a half hour to get the celaphane off the back. I cleaned each step and dried each one. The stair tread wouldn't stick in the corners.  I wished I had looked at all the reviews more closely before I ordered them.