Dunham's 8000-series insulated 8-inch work boot has a hidden inner side zipper for extra easy access. Seam-sealed with waterproof membrane, it is insulated with 400-gram ThinsulateTM. The rugged leather and synthetic upper is well-padded and tough toe and heel bumpers for durability. The oil-resistant, slip-resistant treaded outsole with 90-degree heel is reinforced with stabilizing R-BarTM. Men’s sizes 7–12, 13, 14, 15, 16 and 17 in 4E; 8–12, 13, 14, 15 and 16 in 6E.