Complete with the 8-Layer Rocky Ride Comfort System. Oil-resistant rubber outsole. Guaranteed Rocky Waterproof construction. Tempered steel shank. 8-Layer Rocky Ride Comfort System. Full-grain leather upper. ASTM F2413 protective toe classification. ASTM F2413 electrical hazard standard. Removable, dual-density polyurethane Ride footbed with heel stabilizer. Shaft height and circumference may vary by size.