Rockport Men's Marden Oxford- 100% Full-grain leather Synthetic sole Flexible, San Crispino construction provides forefoot flexibility to aid the walking motion Polyurethane Kinetic Air Circulator&#174 offers durable cushioning with patented active air-circulating technology Leather quarter lining for moisture absorption Fiberlon shank offers lightweight midfoot support Dual-density polyurethane outsole delivers durable shock absorption to help reduce foot fatigue