I bought these at the store the other day: http://www.hugoboss.com/us/'carmons...prefn1=style&prefv1=Dress+Shoes&sz=96&start=1 Hugo Boss derbys. I asked the seller about the soles, about if they were leather, and sewn onto the shoes under the rubber. They cost about 390$, so they had to be something like that. He wasn't sure, but said that they probably were. So if they are worn in a few years, and I'd like to change the sole. Is that possible? And if yes, would that be that they have to glue a new rubbery thing under it?