Some questions - why did you take the feet off, and why are you now asking about them? Were you getting rattles from other things in the room, and the towel helped to eliminate that? Are you not happy with the towel anymore? Depending on why you are asking, you may want to look at the Auralex Gramma isolation pads for subs. People here seem to be quite happy with them. The HD model (which I bought) has a nice black cloth finish.