Opening the package from O'stock, the smell of synthetic shoe material filled the room. I left them to air out for almost 2 weeks before I wore them to work. Even then, my coworkers commented on the smell. Since these are synthetic, they were great during winter. The faux leather was impervious to snow and slush, but as soon as Spring arrived, they were gone. I would not recommend. These were way too expensive for the poor quality.