Love these and will be ordering more.  Like previous reviewers mentioned, they do still move around a bit, but have mostly stayed put with the 3 maniacs in the house (4, 6 & 8 yr old) - not enough for me to buy tape for them yet.  I will be purchasing more for our other set of wooden stairs.  I took 1 star off, because it was not exactly as pictured.  The picture of the yellow set, shows a white/cream trim around the very outside, but mine came with a dark yellow trim.  Oh well...