Outer material: 100 percent cowskin Inner material: 50 percent polyester 50 percent polyuraehane, 95 percent polyester 5 percent polyuraehane Closure type: laces Heel: flat Distinguished by its minimalist design, these derby shoes from BOSS deliver a masterclass in timeless style. Premium leather construction ensures lasting quality, while precise stitching and a sleek silhouette maintain the clean aesthetic. The traditional lace-up fastening provides a secure fit, complemented by a durable sole that's built for everyday wear. These versatile BOSS Colby Derby shoes blend seamlessly with formal and smart-casual attire. Product Highlights: - Premium leather uppers offer exceptional durability and a naturally beautiful finish that improves with wear. - Traditional derby construction features open lacing for easy adjustment and a comfortable fit across the instep. - Leather lining and cushioned footbed work together to create a comfortable environment for all-day wear. - Subtle BOSS branding maintains the shoes' understated aesthetic while affirming their luxury heritage. - Robust sole unit provides reliable grip and stability while maintaining a refined profile suitable for formal occasions.