Danner Men's Tanicus 8'' NMT Boots Leather, Nylon, Rubber, Man Made Shaft measures approximately 8" from arch Rough-out leather and 1000 denier nylon upper 100% Waterproof barrier allows moisture to escape without letting water in keeping your feet dry and comfortable all day long Lace garage prevents loose laces from snagging or dragging, at the top of the boot's tongue is a stretch fabric pocket designed to tuck your lace ends into Non-metallic toe does not transmit heat or cold, nor will it set off metal detectors as expected it meets or exceeds ASTM F2413-11 M I/75 C/75 EH standards Danner Tanicus outsole, pentagonal lugs give maximum surface contact for grip in a variety of terrain