Vibration resistant rubber that absorbs vibrations just by laying it down.
Even when used for heavy objects for a long time, it has less "flatten" and less unpleasant smell, so you can rest assured that it will not be disappointed.
The image is for "Yahatakei Seldamper EX large refrigerator thickness x diameter 0.4 x 3.0 inches (10 x 75 mm) pie (4 sheets).