The chairs stay put, even on my satin finish oak. It helps from scratching my floors. The foamy cushion keeps them from being off balance.

After a week plus of use the pads under the most used chairs completely flattened out to less then half of the original thickness. But at least it is quiet when you do that. These are not felt pads at all--they're some sort of rubbery material.

Installation is a snap - took less than 20 minutes to install. They provide great friction on the floor so the sofa doesn't move. I have a bench in front of my bed to help my dogs get up on the bed. Durable and as advertised.