Bloomsbury - Men's Black Calf Leather Derby Shoe, these derby shoes feature a open lacing system and dainite sole. A black calf leather derby shoe with a dainite sole is a combination of style and refinement. The dainite sole is known for its durability and grip, making it ideal for all weather conditions. The green color provides a classic and versatile look. These derbies are suitable for both formal occasions and everyday wear.