What does the “M” and “W” in your product name mean? Example: “Raven S-E15 Sandstorm Nubuck - M”. “M” stands for “Men” and “W” is for “Women” sizes. Related articles Do you offer free returns? How can I clean my shoes? I am an owner of a store / distribution centre / buyer / sales agent, how do we get in contact about selling ARKK Copenhagen?