Waterproof pigskin upper. Thermal foam insulation adds warmth. Cambrelle® lining. Permanent direct-attach molding seals out water. Breathable fabric linings. Non-removable full-cushion footbed. Fiberglass shank stabilizes foot, weighs 75% less than steel and reduces fatigue. Steel toe rated ASTM F2413-05 M I/75C/75 EH.