After a few years of use, the pants have totally changed appearance In many places the surface is smooth and shiny from blood and other things. We try to brush with a brass brush It is difficult and does not yield a satisfactory result We wash with EFFEKTIV Care & Clean and try to brush the wet leather with a brass brush By scraping with a sharp knife you can see plenty of dirt. We wash the pants and let them dry slowly in towels After drying we brush again with a brass brush Here is the left side brushed – the right is not The small brush was allright – the big was excessive. Find an appropriate brass brush which is applicable to nubuck