Redback's Steel Toe meets or exceeds the ASTM F2413-11 I/75 C/75 EH standards with a slightly wider fit. Heavy Duty External Scuff Guard - Molded TPU Toe Guard provides maximum protection and extended life to your boot Full Grain Leather Upper - We source only industrial grade premium full grain leather that comes from the hides tightest grain section. Includes one pair of Redback Black Crew socks - one size fits most.