The caster wheels sit in the felt pads but not snug so when you move/roll the chairs they come right off. The caster wheel comes off when the chair is rolled.

The fu store clear self adhesive bumpers work exactly as expected. They are easy to peel off, they stick well and are thick. The grandkids come over and have to slam the doors on everything.

These things are garbage and keep sliding snd falling off. Too small and adhesive not very strong. If you stack 3 on top of each other they might be a bumper worth using.