I am a professional detailer and always looking to up my game. I thought this tool would be a game-changer. My idea was to wash the car as normal with a seperate mitt, then use this mitt to re-lubircate the panel, and use the "clay" side right after to remove contaminants and leave a smooth surface.There are two issues with this product.The first is that it is very large and heavy, making holding (hand in or out of the mitt) far too cumbersome. The mitt is not ergonomic at all. Believe me, you will run into this issue. My thoughts were that since this mitt would be heavy when full of water, that I would have to apply less pressure when holding the mitt to clay the surface, as the weight of itself would be adequate to shear off contaminants. This was incorrect. It is so heavy and slow and inflexible, that the clay process is near impossible.The second issue is that the clay side is absolutely worthless, even after breaking it in. The car was still rough (I had a chance to try this mitt on ~5 cars), and the results were inadequate on all of them. I assumed this would do a better job than the handy clay towel (green), but the results were not even close. The handy clay towel gave me faster, easier, and superior results, at half the cost.Bottom line is, even as a consumer grade product, this wash/clay mitt is not worth it in the slightest. It is impossible to use, the clay media is of poor quality, and the pricepoint is twice what it should be. My advice as a professional is, stick with a two bucket method for washing, and then use a dedicated clay towel or clay bar as your decontamination stage.