Most compounding foam pads run warm because of the friction they create. The 3M Perfect-It Plus Foam Compounding pad uses a smoother running convoluted pad design to keep the surface cool. The dense foam enhances the leveling ability of the compound by keeping the compound on top of the pad, rather than absorbing it. The convoluted design "breathes", meaning air can pass under the pad. The passage of air breaks the surface tension so the pad glides more easily over the paint. The 3M Perfect-It Plus Foam Compounding Pad can be used with any hook and loop velcro 7 inch rotary backing plate.