My three stars are because: (1) the thickness isn't as advertised (actual is less than 0.25") (very disappointing); (2) its non-slip surface seems to work well for our needs; the pad (and rug) are under furniture on three sides and center; (3) the tacky surface on top is only a light grip, which is meant to hold a rug in place, but our rug still has rolls/buckling that won't lay flat even when we step on them (we've only had it in place one day); and (4) it was fairly easy to trim. If it had been at least as thick as advertised, I would have given it 4-4.5 stars. I was expecting it to make up for the thin rug we also purchased through Wayfair. It doesn't and wasn't worth the return fee.