These rubber coasters keep your couch from sliding on hardwood flooring. These are the only products that work to keep beds from sliding around hardwood floors.

This item has a horrible smell that did not dissipate at all even after being left out on the lanai for 3 days. Absolutely disgusting.

Was not bad, just about 2 seconds of vibration. They help prevent rocking on slightly uneven floors.

One downside is that they are a little smaller than i had originally expected. As is typical today, i have to buy more than needed but these are nice to have around. My only complaint is they only have them in black.