360 degrees of lightweight comfort. Polyurethane midsole provides lightweight, durable cushioning. Waterproof full-grain leather is soft to minimize break-in time. Moisture-channeling spacer mesh comfort lining. Nylon diffusion shank for torsional rigidity. TiTAN alloy safety toe for lightweight protection and roomy fit. Contoured open-cell polyurethane footbed with Outlast Adaptive Comfort cover.