The Red Wing 4215 work boot is ideal for anyone who’s in need of something that’s sturdy and stylish all in one. Not only are they designed with unique Mahogany Voyageur Leather and a Horizon™ SuperSole® outsole; these boots also have a DynaForce® insole and a SuperSole® Welt construction. Rating: ASTM F2413-11,M/I/75/C/75