Rockport Men's Windward Leather Boat Shoe- 100% Full-grain leather Rubber sole Handsewn for slipper-like comfort San Crispino heel construction offers a stable walking base Rubberized EVA Kinetic Air Circulator&#174 for durable cushioning with patented active air-circulating technology CMEVA midsole provides lightweight cushioning that helps reduce foot and leg fatigue Fiberlon shank offers lightweight midfoot support