Rocky Men's 10" Core - Durability Steel Toe WProof Wellington-6547 Leather,Nylon Synthetic sole Shaft measures approximately 10" from arch ASTM F2413-05 I/75 C/75 Steel Toe/Electronic Hazard Classification Full-grain leather with 900D abrasion-resistant Nylon upper Removable Goodyear Welt Construction Guaranteed Rocky Waterproof construction Rugged real Rocky lugs-Slip,oil resistant