So many shoes use polyurethane soles now and I keep reading about people storing the shoes and hydrolysis taking place from lack of use and the soles disintergrating within an hour after wearing them out of storage. I almost got some Rockports but I didn't like the adidas soles on them and everyone said the quality went way down but the prices stayed way up since adidas took them over.
That's what I was told about the Blundstones I wear. They did away with the poly soles but there are still a ton on the market being blown out.