If you feel like splashing out on Mould Treated Crust, look no further than Maison Martin Margiela’s Mould Treated Crust Leather Oxfords. Released as part of the designer’s Spring/Summer 2013 range, the classic blue oxford silhouette is the result of a unique production process that sees each pair worn in and “aged” by rolling each shoe in a drum containing pumice stone to roughen the leather exterior. The Italian-made shoes also feature leather lining and contrasting white stitching.