Hard work is at the heart of the Second Shift steel toe work boot. With classic styling and rugged detailing, this basic boot tackles a number of jobs. Stay comfortable and experience the durability and attitude Cat Footwear delivers. ASTM F2413-11 I/75 C/75 Steel Toe. Electrical Hazard. Slip Resistant. Full Grain Leather. Nubuck Leather or Pull Up Leather Nylon Mesh Lining. Climasphere Insole. Goodyear Welt Construction.