We have become big fans of the RUPES BigFoot Random Orbital Polishing System, and the colour coded pads really do complement the various compounds and free-spinning dual action polishers perfectly. The RUPES BigFoot UHS Foam Polishing Pad is currently available in three sizes, with each size being designed for a specific subset of BigFoot machines (100 mm for the RUPES LHR 75E Mini BigFoot Polisher, 150 mm for the RUPES LHR 12E Duetto BigFoot Polisher, RUPES LHR 15ES BigFoot Polisher and RUPES LHR 15 Mark II BigFoot Polisher, and 180 mm for the RUPES LHR 21ES BigFoot Polisher and RUPES LHR 21 Mark II BigFoot Polisher). All three sizes are made out of the same semi-coarse open cell foam and feature a centering hole, a durable hook and loop backing and a strongly splayed side profile for safety. Furthermore, they all meet a specific weight target, which ensures that they work in perfect harmony with the counterbalance in the machines they are intended to be used with. This approach, which is also used for the BigFoot backing plates, ensures that each machine is optimally balanced during use and that vibration levels are minimised. Although ultra-high solid and scratch-resistant paint systems demand a relatively firm pad for paint correction purposes, you would be forgiven for thinking that the RUPES BigFoot UHS Foam Polishing Pad is a little too firm; when it's brand new or fresh out of your kit bag it really does feel worryingly stiff and dense. However, if you prime it properly you'll find that it quickly softens up during use. It just needs some product in it and to be warmed up before its true nature is revealed!