Black Walnut Full Grain Oil-Tanned Leather. Construction: Goodyear Storm Welt. Lining: Forest Green Dri-Lex. Insole: Removable Polyurethane Footbed on Top of a Poron 4000, Comfort Cushion. Special Features: ASTM F2413-11 M I/75/C/75/Mt/75 Steel Toe, EH Rated.