TAN NUBUK GENUINE LEATHER 3M THINSULATE™ INSULATION, 200 GRAMS • Seams: Quadruple heavy duty stitching in stress area. • Sole and toe bumper: TPU, steel toe, PU and Rubber outsole. • Insole: Orthopedic insole, Flexible stroble, steel plate. • Other Special Features: High gusseted tongue, Flexible and lightweight dual density sole CSA GRADE 1 EH / ASTM F2413-11 / (M I/75 C/75 EHPR)