Rockport Men Dress Shoes US Men Shoe Sizes Listed Full-grain leather that is easy to clean and maintain to extend the product's life Construction - 3 part insole helps provide forefoot flexibility Foot bed contains PU Kinetic Air Circulator technology - durable cushioning with patented active air circulation technology Leather lining provides for moisture absorption and great abrasion resistance Fiberlon shank provides lightweight midfoot support and is airport security friendly Rubberized EVA - provides durable, shock absorbency