They appear to be made of soft thermoplastic. Rendering them worthless for our need.

The gripper portion of the pad loses its adhesion from the middle padded portion. The adhesive is worthless. If you have luxury vinyl floors which have a very slight simulated grain texture that texture destroys the pads when you slide your furniture....  Read More

I’m so frustrated; who wants to waste their time reading reviews, buying and installing a product that doesn’t work? These things are garbage for that reason.