The Alterra is a rugged, hiker-inspired work boot that delivers on comfort and durability to get the job done. Dry-Core lining keeps your feet dry from the elements, the oil and slip resistant outsole provides superior traction and the lightweight non-metallic safety toe offers ASTM certified protection. Dry-Core is LaCrosse's highly engineered, waterproof barrier that lines the entire boot for 100% protection that allows moisture to escape without letting water in, keeping you dry and comfortable all day long. Abrasion resistant material covers toe and heel for added durability. Alterra rubber outsole features an aggressive lug pattern with oil & slip resistance for superior traction on varied surfaces. Fiberglass shank. Lightweight non-metallic toe safety toe meets or exceeds ASTM standard F2413-11 M I/75 C/75 EH. Electrical hazard (EH) footwear is manufactured with non-conductive electrical shock resistant soles and heels.