Carhartt Frontier 6" Composite-Toe Work Boots The Men’s Carhartt Frontier Work Boots combine rugged jobsite protection with supportive comfort in a versatile six-inch design. A composite safety toe, electrical-hazard protection, and a heat-resistant, slip-resistant outsole help prepare you for demanding conditions, while Rain Defender™ treatment repels water during light rain. Whether you’re climbing ladders, handling maintenance work, or moving between indoor and outdoor jobsites, the supportive footbed, cushioned midsole, and sweat-wicking lining help keep you comfortable throughout the day. Workplace Ratings: ASTM F2413-24 Electrical Hazard (EH); ASTM F3445-24 Slip Resistant (SR); heat-resistant outsole rated to 300°C/572°F.