MaterialsUpper: Leather Working Group (LWG) Gold-Rated & chrome-free, tumbled managua leather.Embroidery: Polyester thread for high durability.Insoles: High performance Ortholite insoles featuring open-cell technology.Midsole & Outsole: 20% recycled rubber and 80% virgin natural rubber.Laces: REPREVE 100% recycled polyester.Size 10. Has a few marks see photos for details.