These look nice and were well packages. The fold from packing did flatten out when I placed something heavy on top of them for a little while. They stayed in place on the steps on their own until it rained. The enclosed two sided tape does not hold these in place during bad, rainyicy conditions. The back of the treads feels like it is dissolving- feels slimy. My husband almost fell down the stairs with these slipping. I am going to search for better two sided tape. But I fear the treads may have to be thrown away. This is my first poor purchase through Wayfair.