ASTM F2413-11 I/75 C/75 Protective Toe Classification. Compliant with ASTM F2413-11 Electrical Hazard standards. Carbon fiber protective toe cap, Expansion Fit Seam for easy on/off. Long Range Round Toe, Long Range heel. Long Range X outsole exclusive patented system of ten highly engineered components for peak performance. Guaranteed Rocky Waterproof construction.