Ami Alexandre Mattiussi Cow Leather Derbies deliver Parisian modern minimalism in a glossy glazed leather finish, ideal for refined formal or smart-casual wear. Key attributes: Black | Cow leather | Leather sole with anti-slip inserts | Lace-up fastening | Smooth leather lining | Smooth leather insole | Glazed smooth finish | Rectangular toe line | Slim profile | Minimalist — no visible stitching or perforations | Thin laces with delicate metal detail on outer side | Decorative studs integrated under the sole | Dimensions & fit: Sole height: 3 cm | Fits true to size. Take your normal size. | Composition & care: Main material: 100% cow leather | Main lining: 100% calfskin | Outsole: 80% cow leather, 20% rubber | Do not wash.