Terrible adhesion. Do not stick at all. Still they continually fall off. They stick to the floor better the the chair legs.

These make moving furniture easier (and much less stressful) perfect for. Great value. These are very thick and sturdy for my heavy chairs. They stick to the bottom of the feet of the amplifier, making it easier to position the amplifier.

These are large slabs of a dense, multilayered rubber and felty insulation product. They stick on securely and have great thickness. The adhesion is fine, but not prefect enough.

Seem cheaper, but not really. The size option chosen during checkout is not what i received. Even slight movements on furniture because of jumping or other forces can cause stains.