How about the wear layer of vinyl flooring?
0.1mm, 0.2mm, 0.3mm, 0.5mm,0.7mm
In short, the thicker the wear layer, the more durable the floor. If you have a space that will need a high resistance to scratches and wear, a high wear layer, such as a 12 mil or 20 mil, would be best for your application. Commercial vinyl flooring applications will usually require a 20 mil top layer.