Waterproof full grain leather upper. Moisture wicking mesh lining with breathable, waterproof membrane. 400g Thinsulate Ultra insulation. Removable EPX Anti-Fatigue cushion footbed. Advanced Comfort PU midsole. Steel puncture resistant plate. Rubber outsole is heat resistant up to 932 degrees Farenheit. Direct attached construction. CarbonMAX composite toe. EH. PR. WP. Insulated. ASTM F2413-11 M I/75, C/75, EH, PR compliant.