My favorite bathtub non-slip ever. They really look like pebbles in the bottom of our stainless steel tub. One problem, I sometimes put foaming oil in the bath, and if you use any products with oil, these will not keep you from slipping a bit. They work better than something flat, but I still have to be careful. Otherwise, I really like the way they look and overall I feel like I have a better grip when I stand on these. Also, they're comfortable to sit on. I don't even notice they're there.