These are heavy duty cord covering ramps. Absolutely great for providing a safe way to run cord across areas that will be either foot or vehicle-trafficked. They are non slip, both on the bottom AND the top, so once put in place, they won't move.Great for home use too, whether in a garage with limited power outlets that require extension cords, or entryways with power or other cords that must cross a distance. The flip-up top allows for cords to be placed easily, and then popped back down to hide and protect them.One thing we found extremely useful during this holiday season was using these on our entryway sidewalk where we had power cords going out into the front yard from our porch for our Christmas lighting. Protects people from tripping on wires, with clear yellow warning...easy to see even in low light. Just what we needed for safety!Exellent design and iteration. If you have a use for them, I can recommend them. Well executed product!!