Rubber pads keep furniture from sliding underneath your couch. They also prevent your couch from scratching the hardwood floor. They are thick enough to withstand heavy furniture and not scratch orscratch the floor.

Picked up some old leather chairs from craigslist for my dining table. The felt is nice and thick and feels sturdy. I like that it's a little flared, so it will resist getting pushed off center. My chairs glide on hardwood without fear of scratching.